Algebra 2 - Review - 2nd Nine Weeks Exam.ks-ia2€¦ · Find the discriminant of each quadratic...
Transcript of Algebra 2 - Review - 2nd Nine Weeks Exam.ks-ia2€¦ · Find the discriminant of each quadratic...
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Algebra 2ID: 1
Name___________________________________
Period____Date________________©v l2X0v1u30 JKYuptzaf QS1oyfktfw9agrjeE QLKLjCL.U u xAyl2l6 0rKivguhvtNsd 8reensyemr9v1endr.d
Review - 2nd Nine Weeks Exam
Graph each equation.
1)
y =
x + 4 + 4
x
y
−6 −5 −4 −3 −2 −1 1 2 3 4 5 6
−6
−5
−4
−3
−2
−1
1
2
3
4
5
6
2)
y =
x − 3
x
y
−6 −5 −4 −3 −2 −1 1 2 3 4 5 6
−6
−5
−4
−3
−2
−1
1
2
3
4
5
6
Simplify.
3)
−7 − 2i
3 − 8i4)
8i
7 + 7i
5)
3i
−10 + i6)
9i
1 + 7i
7)
(
−3 + 6i)(
−5 − 8i) 8)
(
1 − 3i)(
8 + 3i)
9)
(
8 + 6i)(
5 + 6i) 10)
(
−5 − 2i)2
11)
(
2 − i) −
(
4 − 3i) 12)
(
−8 + 4i) +
(
−8 + 4i)
13)
(−3i) −
(
−4 − 5i) + (i) 14)
(
−7 + 2i) −
(
−3 − 4i)
15)
12
416)
15
3 80
17)
20
2 418)
2
9
-1-
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19)
−
3 5
3 + 320)
4
3 +
3 2
21)
5
−3 + 222)
3
−1 −
3 3
Simplify. Your answer should contain only positive exponents.
23)
3
x−4
y−3
⋅
y ⋅
2
y−1
24)
2
x−2
y2 ⋅
3
x3
y2 ⋅
3
x3
y3
25)
m2 ⋅
3
m4
n4
26)
2
x
y−3
⋅
3
x3
27)
(
4
u−3)−2
28)
(
2
u4
v−2)−3
29)
(
3
x−3)2
30)
(
2
x4
y2)−3
31)
2
x2
y2
x2
y2
32)
a
b2
4
b3
33)
3
y4
4
y34)
2
a−1
b−1
4
a3
35)
2
m3 ⋅
m−3
n−1
n2 ⋅
n
m−3 36)
(
y4
x−1
y−3
⋅
2
x
y2 )
2
37)
(
2
x−1)2
⋅
y2
2
x38)
m−1
n0
2
m
n4 ⋅
(
m
n4)2
Factor each completely.
39)
512
x3 − 192
x2 − 320
x + 120 40)
54
p3 − 126
p2 − 9
p + 21
41)
42
a3 + 35
a2 + 30
a + 25 42)
5
k3 + 20
k2 −
k − 4
-2-
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43)
2
x2 + 17
xy + 35
y2 44)
3
n2m2 −
n3m
45)
5
x2 − 58
xy + 80
y2 46)
35
x2 − 160
xy − 300
y2
47)
3
x2y − 19
xy2 − 14
y3 48)
2
a2 − 5
ab
49)
12
x2 + 12
xy + 3
y2 50)
9
x2 − 4
y2
51)
9
x2 +
y2 52)
16
x2 + 9
y2
53)
9
u2 − 25
v2 54)
25
x2 − 30
xy + 9
y2
55)
4
u2 + 20
uv + 25
v2 56)
27
a2 − 12
b2
57)
−
x3 + 216 58)
24
x3 − 81
59)
1 − 8
u3 60)
216 −
x3
61)
108 + 4
a3 62)
−128
u3 + 250
Perform the indicated operation.
63)
f (
x) =
2
x + 4
g(
x) =
3
x + 4
Find (
f
g)(
x)
64)
h(
x) =
x2 + 5
g(
x) =
2
x + 1
Find (
h +
g)(
x)
65)
h(
x) =
2
x − 5
g(
x) =
x2 + 3
Find (
h ⋅
g)(
x)
66)
f (
x) =
−4
x + 3
g(
x) =
4
x − 4
Find (
f
g )(
x)
67)
g(
x) =
2
x + 1
f (
x) =
x2 + 5
x
Find (
g
f )(
x)
68)
g(
a) =
3
a − 1
h(
a) =
a3 − 4
a
Find (
g −
h)(
a)
-3-
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69)
g(
x) =
2
x + 4
f (
x) =
4
x + 4
Find (
g ⋅
f )(
x)
70)
h(
x) =
x2 + 1
g(
x) =
x + 3
Find (
h
g)(
x)
Identify the vertex, axis of symmetry, and min/max value of each. Then sketch the graph.
71)
y =
−
(
x + 2)2 + 3
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8
72)
y =
(
x + 3)2 − 5
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8
73)
y =
1
3
(
x + 2)2 − 1
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8
74)
y =
−
(
x + 5)2 + 3
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8
-4-
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Solve each system by graphing.
75)
y =
5
2
x − 2
y =
−1
2
x + 4
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
76)
y = 3
y =
−2
x − 3
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
Sketch the solution to each system of inequalities.
77)
x −
y ≥ −1
4
x −
y ≤ 2
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
78)
x + 2
y > −4
x −
y < −1
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
-5-
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79)
4
x −
y < 3
4
x −
y > −3
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
80)
x + 3
y < −9
x + 3
y > −3
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
Find the discriminant of each quadratic equation then state the number and type of solutions.
81)
−10
n2 − 9
n − 1 = 5 82)
5
x2 − 10
x + 14 = 9
83)
10
a2 − 4
a + 17 = 10 84)
5
k2 + 13 = 10
Solve each equation by completing the square.
85)
x2 − 18
x − 48 = 2 86)
x2 − 10
x − 4 = 7
Solve each equation by factoring.
87)
n2 =
−2
n + 3 88)
k2 + 6
k = −8
Solve each equation with the quadratic formula.
89)
5
p2 + 6
p = 144 90)
4
x2 − 18 = −11
x
Write each expression in radical form.
91)
(4
n)
5
392)
r
1
2
93)
(3
m)
5
494)
(3
x)
5
3
-6-
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Write each expression in exponential form.
95)
( 3
n)596)
( 2
v )5
97)
( 5
b)298)
(
x )3
Simplify.
99)
(64
p12)
1
6100)
(27
x6)
5
3
101)
(216
a6)
2
3102)
(64
k6)
1
2
Solve each system by elimination.
103)
9
x − 6
y = 27
3
x − 4
y = 27
104)
3
x + 5
y = −17
x − 10
y = −29
105)
7
x + 3
y = −8
−9
x + 2
y = −19
106)
4
x + 7
y = 11
−9
x + 10
y = 1
Solve each system by substitution.
107)
−2
x + 4
y = −10
x − 2
y = 5
108)
y = 1
8
x + 6
y = 14
109)
x + 2
y = −2
3
x + 6
y = −6
110)
7
x + 5
y = 20
x − 3
y = −12
111) The senior classes at High School A and High School B planned separate trips to the indoor climbing gym.
The senior class at High School A rented and filled 12 vans and 8 buses with 316 students. High School Brented and filled 6 vans and 3 buses with 129 students. Every van had the same number of students in it as
did the buses. How many students can a van carry? How many students can a bus carry?
112) The school that Julio goes to is selling tickets to a choral performance. On the first day of ticket sales theschool sold 2 adult tickets and 13 student tickets for a total of $180. The school took in $120 on the
second day by selling 8 adult tickets and 2 student tickets. What is the price each of one adult ticket and
one student ticket?
-7-
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Simplify.
113)
− 5 −
2 3 −
3 114)
−2 6 −
54 −
45
115)
3 27 −
3 3 −
2 8 116)
2 20 +
3 6 +
3 5
Sketch the graph of each function.
117)
y =
4
x − 4
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8
118)
y =
1
2
x
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8
Simplify.
119)
(
2 − 1)(
−2 2 + 5) 120)
(
3 + 1)(
3 − 1)
121)
4 5(
−2 2 + 5) 122)
5(
5 + 4)
123) 50
xy3 124) 50
x2y4
125) 320
m3n4 126) 320
ab3
Solve each equation. Remember to check for extraneous solutions.
127)
2
n =
3
n − 3 128)
10 −
2
x =
2
x + 2
129) −3 =
−5 + 4
n 130)
13 −
2
x =
x − 2
-8-
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Algebra 2ID: 1
Name___________________________________
Period____Date________________©x d2e0w1930 zKcuitnar qSJo9fPtawFairQeT vLKLWCX.d Q GA0lklX QrwiZgJhktKsi mrnefsJeSrDv1e4du.o
Review - 2nd Nine Weeks Exam
Graph each equation.
1)
y =
x + 4 + 4
x
y
−6 −5 −4 −3 −2 −1 1 2 3 4 5 6
−6
−5
−4
−3
−2
−1
1
2
3
4
5
6
2)
y =
x − 3
x
y
−6 −5 −4 −3 −2 −1 1 2 3 4 5 6
−6
−5
−4
−3
−2
−1
1
2
3
4
5
6
Simplify.
3)
−7 − 2i
3 − 8i
−5 − 62i
734)
8i
7 + 7i
4i + 4
7
5)
3i
−10 + i
−30i + 3
1016)
9i
1 + 7i
9i + 63
50
7)
(
−3 + 6i)(
−5 − 8i)
63 − 6i
8)
(
1 − 3i)(
8 + 3i)
17 − 21i
9)
(
8 + 6i)(
5 + 6i)
4 + 78i
10)
(
−5 − 2i)2
21 + 20i
11)
(
2 − i) −
(
4 − 3i)
−2 + 2i
12)
(
−8 + 4i) +
(
−8 + 4i)
−16 + 8i
13)
(−3i) −
(
−4 − 5i) + (i)
4 + 3i
14)
(
−7 + 2i) −
(
−3 − 4i)
−4 + 6i
15)
12
4
3
16)
15
3 80
3
12
17)
20
2 4
5
218)
2
9
2
3
-1-
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19)
−
3 5
3 + 3
15 −
3 5
220)
4
3 +
3 2
−4 3 +
12 2
15
21)
5
−3 + 2
−3 5 −
10
722)
3
−1 −
3 3
3 −
9 3
26
Simplify. Your answer should contain only positive exponents.
23)
3
x−4
y−3
⋅
y ⋅
2
y−1
6
x4y324)
2
x−2
y2 ⋅
3
x3
y2 ⋅
3
x3
y3
18
y7x4
25)
m2 ⋅
3
m4
n4
3
m6n4
26)
2
x
y−3
⋅
3
x3
6
x4
y3
27)
(
4
u−3)−2
u6
1628)
(
2
u4
v−2)−3
v6
8
u12
29)
(
3
x−3)2
9
x6
30)
(
2
x4
y2)−3
1
8
x12
y6
31)
2
x2
y2
x2
y2
2
32)
a
b2
4
b3
a
4
b
33)
3
y4
4
y
3
y3
434)
2
a−1
b−1
4
a3
1
2
a4b
35)
2
m3 ⋅
m−3
n−1
n2 ⋅
n
m−3
2
m3
n4 36)
(
y4
x−1
y−3
⋅
2
x
y2 )
2
y10
4
37)
(
2
x−1)2
⋅
y2
2
x
2
y2
x338)
m−1
n0
2
m
n4 ⋅
(
m
n4)2
1
2
m4n12
Factor each completely.
39)
512
x3 − 192
x2 − 320
x + 120
8(
8
x2 − 5)(
8
x − 3)
40)
54
p3 − 126
p2 − 9
p + 21
3(
6
p2 − 1)(
3
p − 7)
41)
42
a3 + 35
a2 + 30
a + 25
(
7
a2 + 5)(
6
a + 5)
42)
5
k3 + 20
k2 −
k − 4
(
5
k2 − 1)(
k + 4)
-2-
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43)
2
x2 + 17
xy + 35
y2
(
2
x + 7
y)(
x + 5
y)
44)
3
n2m2 −
n3m
n2m(
3
m −
n)
45)
5
x2 − 58
xy + 80
y2
(
5
x − 8
y)(
x − 10
y)
46)
35
x2 − 160
xy − 300
y2
5(
7
x + 10
y)(
x − 6
y)
47)
3
x2y − 19
xy2 − 14
y3
y(
3
x + 2
y)(
x − 7
y)
48)
2
a2 − 5
ab
a(
2
a − 5
b)
49)
12
x2 + 12
xy + 3
y2
3
(
2
x +
y)2
50)
9
x2 − 4
y2
(
3
x + 2
y)(
3
x − 2
y)
51)
9
x2 +
y2
Not factorable
52)
16
x2 + 9
y2
Not factorable
53)
9
u2 − 25
v2
(
3
u + 5
v)(
3
u − 5
v)
54)
25
x2 − 30
xy + 9
y2
(
5
x − 3
y)2
55)
4
u2 + 20
uv + 25
v2
(
2
u + 5
v)2
56)
27
a2 − 12
b2
3(
3
a + 2
b)(
3
a − 2
b)
57)
−
x3 + 216
(
−
x + 6)(
x2 + 6
x + 36)
58)
24
x3 − 81
3(
2
x − 3)(
4
x2 + 6
x + 9)
59)
1 − 8
u3
(
1 − 2
u)(
1 + 2
u + 4
u2)
60)
216 −
x3
(
6 −
x)(
36 + 6
x +
x2)
61)
108 + 4
a3
4(
3 +
a)(
9 − 3
a +
a2)
62)
−128
u3 + 250
2(
−4
u + 5)(
16
u2 + 20
u + 25)
Perform the indicated operation.
63)
f (
x) =
2
x + 4
g(
x) =
3
x + 4
Find (
f
g)(
x)
6
x + 12
64)
h(
x) =
x2 + 5
g(
x) =
2
x + 1
Find (
h +
g)(
x)
x2 + 2
x + 6
65)
h(
x) =
2
x − 5
g(
x) =
x2 + 3
Find (
h ⋅
g)(
x)
2
x3 − 5
x2 + 6
x − 15
66)
f (
x) =
−4
x + 3
g(
x) =
4
x − 4
Find (
f
g )(
x)
−4
x + 3
4
x − 4
67)
g(
x) =
2
x + 1
f (
x) =
x2 + 5
x
Find (
g
f )(
x)
2
x + 1
x2 + 5
x68)
g(
a) =
3
a − 1
h(
a) =
a3 − 4
a
Find (
g −
h)(
a)
−
a3 + 7
a − 1
-3-
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69)
g(
x) =
2
x + 4
f (
x) =
4
x + 4
Find (
g ⋅
f )(
x)
8
x2 + 24
x + 16
70)
h(
x) =
x2 + 1
g(
x) =
x + 3
Find (
h
g)(
x)
x2 + 6
x + 10
Identify the vertex, axis of symmetry, and min/max value of each. Then sketch the graph.
71)
y =
−
(
x + 2)2 + 3
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8 Vertex: (−2, 3)Axis of Sym.:
x = −2
Max value = 3
72)
y =
(
x + 3)2 − 5
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8 Vertex: (−3, −5)Axis of Sym.:
x = −3
Min value = −5
73)
y =
1
3
(
x + 2)2 − 1
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8 Vertex: (−2, −1)Axis of Sym.:
x = −2
Min value = −1
74)
y =
−
(
x + 5)2 + 3
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8 Vertex: (−5, 3)Axis of Sym.:
x = −5
Max value = 3
-4-
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Solve each system by graphing.
75)
y =
5
2
x − 2
y =
−1
2
x + 4
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
(2, 3)
76)
y = 3
y =
−2
x − 3
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
(−3, 3)
Sketch the solution to each system of inequalities.
77)
x −
y ≥ −1
4
x −
y ≤ 2
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
78)
x + 2
y > −4
x −
y < −1
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
-5-
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79)
4
x −
y < 3
4
x −
y > −3
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
80)
x + 3
y < −9
x + 3
y > −3
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
Find the discriminant of each quadratic equation then state the number and type of solutions.
81)
−10
n2 − 9
n − 1 = 5
−159; two imaginary solutions
82)
5
x2 − 10
x + 14 = 9
0; one real solution
83)
10
a2 − 4
a + 17 = 10
−264; two imaginary solutions
84)
5
k2 + 13 = 10
−60; two imaginary solutions
Solve each equation by completing the square.
85)
x2 − 18
x − 48 = 2
{
9 + 131 ,
9 −
131}
86)
x2 − 10
x − 4 = 7
{11, −1}
Solve each equation by factoring.
87)
n2 =
−2
n + 3
{1, −3}
88)
k2 + 6
k = −8
{−4, −2}
Solve each equation with the quadratic formula.
89)
5
p2 + 6
p = 144
{
24
5, −6} 90)
4
x2 − 18 = −11
x
{
−11 + 409
8,
−11 −
409
8 }
Write each expression in radical form.
91)
(4
n)
5
3
( 34
n)5
92)
r
1
2
r
93)
(3
m)
5
4
( 43
m )5
94)
(3
x)
5
3
( 33
x )5
-6-
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Write each expression in exponential form.
95)
( 3
n)5
n
5
396)
( 2
v )5
(2
v)
5
2
97)
( 5
b)2
b
2
598)
(
x )3
x
3
2
Simplify.
99)
(64
p12)
1
6
2
p2
100)
(27
x6)
5
3
243
x10
101)
(216
a6)
2
3
36
a4
102)
(64
k6)
1
2
8
k3
Solve each system by elimination.
103)
9
x − 6
y = 27
3
x − 4
y = 27
(−3, −9)
104)
3
x + 5
y = −17
x − 10
y = −29
(−9, 2)
105)
7
x + 3
y = −8
−9
x + 2
y = −19
(1, −5)
106)
4
x + 7
y = 11
−9
x + 10
y = 1
(1, 1)
Solve each system by substitution.
107)
−2
x + 4
y = −10
x − 2
y = 5
Infinite number of solutions
108)
y = 1
8
x + 6
y = 14
(1, 1)
109)
x + 2
y = −2
3
x + 6
y = −6
Infinite number of solutions
110)
7
x + 5
y = 20
x − 3
y = −12
(0, 4)
111) The senior classes at High School A and High School B planned separate trips to the indoor climbing gym.
The senior class at High School A rented and filled 12 vans and 8 buses with 316 students. High School Brented and filled 6 vans and 3 buses with 129 students. Every van had the same number of students in it as
did the buses. How many students can a van carry? How many students can a bus carry?
Van: 7, Bus: 29
112) The school that Julio goes to is selling tickets to a choral performance. On the first day of ticket sales theschool sold 2 adult tickets and 13 student tickets for a total of $180. The school took in $120 on the
second day by selling 8 adult tickets and 2 student tickets. What is the price each of one adult ticket and
one student ticket?
adult ticket: $12, student ticket: $12
-7-
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Simplify.
113)
− 5 −
2 3 −
3
− 5 −
3 3
114)
−2 6 −
54 −
45
−5 6 −
3 5
115)
3 27 −
3 3 −
2 8
6 3 −
4 2
116)
2 20 +
3 6 +
3 5
7 5 +
3 6
Sketch the graph of each function.
117)
y =
4
x − 4
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8
118)
y =
1
2
x
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8
Simplify.
119)
(
2 − 1)(
−2 2 + 5)
−9 +
7 2
120)
(
3 + 1)(
3 − 1)
2
121)
4 5(
−2 2 + 5)
−8 10 + 20
122)
5(
5 + 4)
5 +
4 5
123) 50
xy3
5
y 2
xy
124) 50
x2y4
5
y2x 2
125) 320
m3n4
8
n2m 5
m
126) 320
ab3
8
b 5
ab
Solve each equation. Remember to check for extraneous solutions.
127)
2
n =
3
n − 3
{3}
128)
10 −
2
x =
2
x + 2
{2}
129) −3 =
−5 + 4
n
{1}
130)
13 −
2
x =
x − 2
{5}
-8-
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Algebra 2ID: 2
Name___________________________________
Period____Date________________©U X2x0e1d3E qKouJtHal ISGoafFt7wQaYryey ULELhCc.0 9 VAllBlM Gr1i5gOhMtusc KrxeRsOe4rKvBe2dy.u
Review - 2nd Nine Weeks Exam
Graph each equation.
1)
y =
−
x + 2
x
y
−6 −5 −4 −3 −2 −1 1 2 3 4 5 6
−6
−5
−4
−3
−2
−1
1
2
3
4
5
6
2)
y =
−
x + 3 + 4
x
y
−6 −5 −4 −3 −2 −1 1 2 3 4 5 6
−6
−5
−4
−3
−2
−1
1
2
3
4
5
6
Simplify.
3)
−6 − 10i
−6 + 8i4)
−3 − 10i
−10 − 7i
5)
8 − 9i
9 + i6)
10 − 9i
5 − 6i
7)
(
−7 + 8i)(
5 − 6i) 8)
(3i)(−5i)(
5 − i)
9)
(
−1 + 7i)2 10)
(
−1 − 7i)(
−8 + 8i)
11)
(
1 + 4i) +
(
−4 + 8i) 12)
(
2 + 7i) +
(
2 − 6i)
13)
(6i) + 7 +
(
−8 + 7i) 14)
(−7i) −
(
−7 − 7i) + (6i)
15)
3 2
816)
5 8
4
-1-
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17)
5 6
3 2718)
5 6
8
19)
4
5 −
220)
2
2 3 + 2
21)
5
−2 +
3 522)
5
5 −
2 2
Simplify. Your answer should contain only positive exponents.
23)
3
y2 ⋅
y3
24)
4
a−1
b4 ⋅
a2
b−1
25)
4
n4 ⋅ 2
n 26)
2
y−4
⋅
2
x
y−3
27)
(3
n)2
28)
(
2
x−2
y3)−4
29)
(
3
x
y4)2
30)
(
4
x4
y3)2
31)
u4
2
v
u4
32)
2
x−4
y−4
x4
y4
33)
u−3
v−2
u2
34)
4
y
x4
4
x3
35)
a−2
⋅
a2
b−1
(
a
b−2)−3 36)
(
b
a−3)−4
⋅
(
a0
b−1)4
a
37)
(
x−2
y−3
⋅
2
x2)−4
2
x−3
y3
38)
(
2
x−3
y−2)2
⋅
y3
(
x−3)−2
-2-
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Factor each completely.
39)
128
x3 + 112
x2 + 112
x + 98 40)
35
v3 + 14
v2 − 25
v − 10
41)
168
b3 − 144
b2 − 63
b + 54 42)
6
n3 + 24
n2 +
n + 4
43)
2
x2 − 15
xy − 27
y2 44)
10
x2 + 86
xy − 140
y2
45)
12
u2 − 42
uv + 36
v2 46)
7
m4 + 37
m3n − 30
n2m2
47)
7
u2 + 41
uv + 30
v2 48)
7
u2 − 10
uv
49)
27
x2 + 18
xy + 3
y2 50)
16
x2 − 9
y2
51)
5
x2 − 5
y2 52)
25
m2 + 10
mn +
n2
53)
a2 − 2
ab +
b2 54)
50
u2 − 18
v2
55)
25
x2 + 30
xy + 9
y2 56)
16
x2 − 24
xy + 9
y2
57)
u3 + 27 58)
−500
x3 − 32
59)
81
x3 + 3 60)
192 + 81
x3
61)
125
x3 − 64 62)
1 − 8
x3
Perform the indicated operation.
63)
g(
x) =
2
x + 3
f (
x) = 2
x
Find (
g
f )(
x)
64)
g(
t) =
−3
t2 + 2
t
h(
t) =
2
t + 2
Find (
g
h )(
t)
-3-
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65)
g(
x) =
−2
x2 −
x
h(
x) =
x − 2
Find (
g
h)(
x)
66)
h(
x) =
2
x + 3
g(
x) =
2
x + 4
Find (
h −
g)(
x)
67)
h(
a) =
4
a + 1
g(
a) =
a2 + 2
Find (
h +
g)(
a)
68)
h(
x) =
x + 1
g(
x) =
−2
x3 + 4
x2 +
x
Find (
h
g)(
x)
69)
f (
n) =
n3 −
n
g(
n) =
4
n + 3
Find (
f +
g)(
n)
70)
h(
x) =
x3 + 5
g(
x) =
4
x − 2
Find (
h −
g)(
x)
Identify the vertex, axis of symmetry, and min/max value of each. Then sketch the graph.
71)
y =
−
(
x + 5)2 − 3
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8
72)
y =
−1
2
(
x − 4)2
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8
73)
y =
−1
2
(
x + 6)2 − 1
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8
74)
y =
1
4
(
x − 4)2 + 3
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8
-4-
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Solve each system by graphing.
75)
y =
−4
x + 4
y =
−
x − 2
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
76)
y =
3
4
x − 4
y =
−5
4
x + 4
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
Sketch the solution to each system of inequalities.
77)
2
x +
y ≥ −1
x + 2
y ≥ 4
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
78)
y ≤ −1
4
x +
y > 3
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
-5-
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79)
2
x + 3
y ≤ 3
2
x − 3
y > 9
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
80)
5
x + 2
y ≥ −6
x − 2
y ≤ −6
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
Find the discriminant of each quadratic equation then state the number and type of solutions.
81)
−2
x2 + 8
x − 5 = 3 82)
−
r2 + 2
r − 8 = −8
83)
b2 + 6
b − 5 = 2 84)
−
n2 − 6
n − 14 = −5
Solve each equation by completing the square.
85)
v2 − 10
v − 102 = −8 86)
a2 − 2
a − 68 = −8
Solve each equation by factoring.
87)
x2 =
−10
x − 21 88)
x2 =
−42 − 13
x
Solve each equation with the quadratic formula.
89)
5
k2 + 11
k = −9 90) 5
a2 =
23 + 3
a
Write each expression in radical form.
91)
p
6
592)
(10
n)
5
6
93)
(2
x)
1
594)
(2
m)
1
4
-6-
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Write each expression in exponential form.
95)
( 3
x )5 96) 4
10
r
97)
( 4
b)398)
( 510
n)6
Simplify.
99)
(100
a2)
3
2100)
(
x12)
5
3
101)
(
n3)
5
3102)
(1000
v9)
4
3
Solve each system by elimination.
103)
−5
x − 6
y = 11
−10
x + 2
y = 8
104)
7
x + 6
y = 9
14
x + 12
y = 12
105)
−8
x + 6
y = 7
−28
x + 21
y = 7
106)
4
x − 4
y = 6
−6
x + 6
y = −18
Solve each system by substitution.
107)
−3
x +
y = −9
3
x − 2
y = 15
108)
3
x +
y = −21
4
x − 4
y = 4
109)
y = 1
−5
x + 2
y = 22
110)
3
x − 4
y = 17
−2
x +
y = 2
111) When you reverse the digits in a certain two-digit number you decrease its value by 63. What is the numberif the sum of its digits is 9?
112) Mei and Eugene each improved their yards by planting grass sod and ornamental grass. They bought their
supplies from the same store. Mei spent $168 on 10 ft² of grass sod and 12 bunches of ornamental grass.
Eugene spent $80 on 5 ft² of grass sod and 5 bunches of ornamental grass. Find the cost of one ft² of grass
sod and the cost of one bunch of ornamental grass.
-7-
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Simplify.
113)
− 18 −
2 6 −
8 114)
2 5 −
3 +
2 12
115)
2 6 +
2 5 −
3 24 116)
−2 2 −
24 −
2 6
Sketch the graph of each function.
117)
y =
3
x − 5
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8
118)
y =
−2 +
2
x
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8
Simplify.
119)
(
5 −
2 3)(
−3 + 3) 120)
(
2 + 3)(
4 + 3)
121)
5(
10 +
2 3) 122)
15(
5 +
2 5)
123) 4
64
x4y
4 124) 6
256
x6y
7
125) 3
108
x5y3 126) 32
u4v2
Solve each equation. Remember to check for extraneous solutions.
127)
−15 −
2
n =
−7 −
n 128)
5
n + 3 = 8
129)
2
n =
3
n − 1 130) −7 =
n + 6 − 7
-8-
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Algebra 2ID: 2
Name___________________________________
Period____Date________________©j m2u0w1Y37 oKPuxtfaf zSjoAfotNwhaZrMeC hLQLZCk.s Y WA3lQlA qrXiWgThZtys2 KrYeksheLr6vFeAd0.0
Review - 2nd Nine Weeks Exam
Graph each equation.
1)
y =
−
x + 2
x
y
−6 −5 −4 −3 −2 −1 1 2 3 4 5 6
−6
−5
−4
−3
−2
−1
1
2
3
4
5
6
2)
y =
−
x + 3 + 4
x
y
−6 −5 −4 −3 −2 −1 1 2 3 4 5 6
−6
−5
−4
−3
−2
−1
1
2
3
4
5
6
Simplify.
3)
−6 − 10i
−6 + 8i
−11 + 27i
254)
−3 − 10i
−10 − 7i
100 + 79i
149
5)
8 − 9i
9 + i
63 − 89i
826)
10 − 9i
5 − 6i
104 + 15i
61
7)
(
−7 + 8i)(
5 − 6i)
13 + 82i
8)
(3i)(−5i)(
5 − i)
75 − 15i
9)
(
−1 + 7i)2
−48 − 14i
10)
(
−1 − 7i)(
−8 + 8i)
64 + 48i
11)
(
1 + 4i) +
(
−4 + 8i)
−3 + 12i
12)
(
2 + 7i) +
(
2 − 6i)
4 + i
13)
(6i) + 7 +
(
−8 + 7i)
−1 + 13i
14)
(−7i) −
(
−7 − 7i) + (6i)
7 + 6i
15)
3 2
8
3
216)
5 8
4
5 2
-1-
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17)
5 6
3 27
5 2
918)
5 6
8
5 3
2
19)
4
5 −
2
4 5 +
4 2
320)
2
2 3 + 2
3 − 1
2
21)
5
−2 +
3 5
2 5 + 15
4122)
5
5 −
2 2
25 +
10 2
17
Simplify. Your answer should contain only positive exponents.
23)
3
y2 ⋅
y3
3
y5
24)
4
a−1
b4 ⋅
a2
b−1
4
b3a
25)
4
n4 ⋅ 2
n
8
n5
26)
2
y−4
⋅
2
x
y−3
4
x
y7
27)
(3
n)2
9
n2
28)
(
2
x−2
y3)−4
x8
16
y12
29)
(
3
x
y4)2
9
x2y8
30)
(
4
x4
y3)2
16
x8y6
31)
u4
2
v
u4
1
2
v32)
2
x−4
y−4
x4
y4
2
x8y8
33)
u−3
v−2
u2
1
u5v234)
4
y
x4
4
x3
yx
35)
a−2
⋅
a2
b−1
(
a
b−2)−3
a3
b7 36)
(
b
a−3)−4
⋅
(
a0
b−1)4
a
a11
b8
37)
(
x−2
y−3
⋅
2
x2)−4
2
x−3
y3
y9x3
3238)
(
2
x−3
y−2)2
⋅
y3
(
x−3)−2
4
x12y
-2-
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Factor each completely.
39)
128
x3 + 112
x2 + 112
x + 98
2(
8
x2 + 7)(
8
x + 7)
40)
35
v3 + 14
v2 − 25
v − 10
(
7
v2 − 5)(
5
v + 2)
41)
168
b3 − 144
b2 − 63
b + 54
3(
8
b2 − 3)(
7
b − 6)
42)
6
n3 + 24
n2 +
n + 4
(
6
n2 + 1)(
n + 4)
43)
2
x2 − 15
xy − 27
y2
(
2
x + 3
y)(
x − 9
y)
44)
10
x2 + 86
xy − 140
y2
2(
5
x − 7
y)(
x + 10
y)
45)
12
u2 − 42
uv + 36
v2
6(
2
u − 3
v)(
u − 2
v)
46)
7
m4 + 37
m3n − 30
n2m2
m2(
7
m − 5
n)(
m + 6
n)
47)
7
u2 + 41
uv + 30
v2
(
7
u + 6
v)(
u + 5
v)
48)
7
u2 − 10
uv
u(
7
u − 10
v)
49)
27
x2 + 18
xy + 3
y2
3
(
3
x +
y)2
50)
16
x2 − 9
y2
(
4
x + 3
y)(
4
x − 3
y)
51)
5
x2 − 5
y2
5(
x +
y)(
x −
y)
52)
25
m2 + 10
mn +
n2
(
5
m +
n)2
53)
a2 − 2
ab +
b2
(
a −
b)2
54)
50
u2 − 18
v2
2(
5
u + 3
v)(
5
u − 3
v)
55)
25
x2 + 30
xy + 9
y2
(
5
x + 3
y)2
56)
16
x2 − 24
xy + 9
y2
(
4
x − 3
y)2
57)
u3 + 27
(
u + 3)(
u2 − 3
u + 9)
58)
−500
x3 − 32
4(
−5
x − 2)(
25
x2 − 10
x + 4)
59)
81
x3 + 3
3(
3
x + 1)(
9
x2 − 3
x + 1)
60)
192 + 81
x3
3(
4 + 3
x)(
16 − 12
x + 9
x2)
61)
125
x3 − 64
(
5
x − 4)(
25
x2 + 20
x + 16)
62)
1 − 8
x3
(
1 − 2
x)(
1 + 2
x + 4
x2)
Perform the indicated operation.
63)
g(
x) =
2
x + 3
f (
x) = 2
x
Find (
g
f )(
x)
2
x + 3
2
x64)
g(
t) =
−3
t2 + 2
t
h(
t) =
2
t + 2
Find (
g
h )(
t)
−3
t2 + 2
t
2
t + 2
-3-
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65)
g(
x) =
−2
x2 −
x
h(
x) =
x − 2
Find (
g
h)(
x)
−2
x2 + 7
x − 6
66)
h(
x) =
2
x + 3
g(
x) =
2
x + 4
Find (
h −
g)(
x)
−1
67)
h(
a) =
4
a + 1
g(
a) =
a2 + 2
Find (
h +
g)(
a)
a2 + 4
a + 3
68)
h(
x) =
x + 1
g(
x) =
−2
x3 + 4
x2 +
x
Find (
h
g)(
x)
−2
x3 + 4
x2 +
x + 1
69)
f (
n) =
n3 −
n
g(
n) =
4
n + 3
Find (
f +
g)(
n)
n3 + 3
n + 3
70)
h(
x) =
x3 + 5
g(
x) =
4
x − 2
Find (
h −
g)(
x)
x3 − 4
x + 7
Identify the vertex, axis of symmetry, and min/max value of each. Then sketch the graph.
71)
y =
−
(
x + 5)2 − 3
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8 Vertex: (−5, −3)Axis of Sym.:
x = −5
Max value = −3
72)
y =
−1
2
(
x − 4)2
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8 Vertex: (4, 0)Axis of Sym.:
x = 4
Max value = 0
73)
y =
−1
2
(
x + 6)2 − 1
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8 Vertex: (−6, −1)Axis of Sym.:
x = −6
Max value = −1
74)
y =
1
4
(
x − 4)2 + 3
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8 Vertex: (4, 3)Axis of Sym.:
x = 4
Min value = 3
-4-
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Solve each system by graphing.
75)
y =
−4
x + 4
y =
−
x − 2
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
(2, −4)
76)
y =
3
4
x − 4
y =
−5
4
x + 4
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
(4, −1)
Sketch the solution to each system of inequalities.
77)
2
x +
y ≥ −1
x + 2
y ≥ 4
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
78)
y ≤ −1
4
x +
y > 3
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
-5-
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79)
2
x + 3
y ≤ 3
2
x − 3
y > 9
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
80)
5
x + 2
y ≥ −6
x − 2
y ≤ −6
x
y
−5 −4 −3 −2 −1 1 2 3 4 5
−5
−4
−3
−2
−1
1
2
3
4
5
Find the discriminant of each quadratic equation then state the number and type of solutions.
81)
−2
x2 + 8
x − 5 = 3
0; one real solution
82)
−
r2 + 2
r − 8 = −8
4; two real solutions
83)
b2 + 6
b − 5 = 2
64; two real solutions
84)
−
n2 − 6
n − 14 = −5
0; one real solution
Solve each equation by completing the square.
85)
v2 − 10
v − 102 = −8
{
5 + 119 ,
5 −
119}
86)
a2 − 2
a − 68 = −8
{
1 + 61,
1 −
61}
Solve each equation by factoring.
87)
x2 =
−10
x − 21
{−3, −7}
88)
x2 =
−42 − 13
x
{−7, −6}
Solve each equation with the quadratic formula.
89)
5
k2 + 11
k = −9
{
−11 +
i 59
10,
−11 −
i 59
10 } 90) 5
a2 =
23 + 3
a
{
3 + 469
10,
3 −
469
10 }
Write each expression in radical form.
91)
p
6
5
( 5
p)6
92)
(10
n)
5
6
( 610
n)5
93)
(2
x)
1
5
52
x
94)
(2
m)
1
4
42
m
-6-
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Write each expression in exponential form.
95)
( 3
x )5
x
5
3 96) 4
10
r
(10
r)
1
4
97)
( 4
b)3
b
3
498)
( 510
n)6
(10
n)
6
5
Simplify.
99)
(100
a2)
3
2
1000
a3
100)
(
x12)
5
3
x20
101)
(
n3)
5
3
n5
102)
(1000
v9)
4
3
10000
v12
Solve each system by elimination.
103)
−5
x − 6
y = 11
−10
x + 2
y = 8
(−1, −1)
104)
7
x + 6
y = 9
14
x + 12
y = 12
No solution
105)
−8
x + 6
y = 7
−28
x + 21
y = 7
No solution
106)
4
x − 4
y = 6
−6
x + 6
y = −18
No solution
Solve each system by substitution.
107)
−3
x +
y = −9
3
x − 2
y = 15
(1, −6)
108)
3
x +
y = −21
4
x − 4
y = 4
(−5, −6)
109)
y = 1
−5
x + 2
y = 22
(−4, 1)
110)
3
x − 4
y = 17
−2
x +
y = 2
(−5, −8)
111) When you reverse the digits in a certain two-digit number you decrease its value by 63. What is the numberif the sum of its digits is 9?
81
112) Mei and Eugene each improved their yards by planting grass sod and ornamental grass. They bought their
supplies from the same store. Mei spent $168 on 10 ft² of grass sod and 12 bunches of ornamental grass.
Eugene spent $80 on 5 ft² of grass sod and 5 bunches of ornamental grass. Find the cost of one ft² of grass
sod and the cost of one bunch of ornamental grass.
ft² of grass sod: $12, bunch of ornamental grass: $4
-7-
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Simplify.
113)
− 18 −
2 6 −
8
−5 2 −
2 6
114)
2 5 −
3 +
2 12
2 5 +
3 3
115)
2 6 +
2 5 −
3 24
−4 6 +
2 5
116)
−2 2 −
24 −
2 6
−2 2 −
4 6
Sketch the graph of each function.
117)
y =
3
x − 5
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8
118)
y =
−2 +
2
x
x
y
−8 −6 −4 −2 2 4 6 8
−8
−6
−4
−2
2
4
6
8
Simplify.
119)
(
5 −
2 3)(
−3 + 3)
−21 +
11 3
120)
(
2 + 3)(
4 + 3)
2 2 + 6 +
2 3 + 3
121)
5(
10 +
2 3)
5 2 +
2 15
122)
15(
5 +
2 5)
5 15 +
10 3
123) 4
64
x4y
4
2
xy4
4
124) 6
256
x6y
7
2
xy6
4
y
125) 3
108
x5y3
3
xy3
4
x2
126) 32
u4v2
4
u2v 2
Solve each equation. Remember to check for extraneous solutions.
127)
−15 −
2
n =
−7 −
n
{−8}
128)
5
n + 3 = 8
{5}
129)
2
n =
3
n − 1
{1}
130) −7 =
n + 6 − 7
{−6}
-8-