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Transcript of 3.8.4
Test (CS): Quadratic Functions
Question 1a of 20 ( 3 Factoring a Trinomial 148718 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (x - 6)(x + 3), (x+3)(x-6)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as
x^2. x2 - 3x - 18
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (x - 6)(x + 3).
Question 1b of 20 ( 3 Factoring a Trinomial 245862 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (x - 6)(x + 4), (x + 4)(x - 6)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2. x2 - 2x - 24
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (x - 6)(x + 4).
Question 1c of 20 ( 3 Factoring a Trinomial 245863 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (x - 5)(x + 4), (x + 4)(x - 5)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2. x2 - 1x - 20
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (x - 5)(x + 4).
Question 2a of 20 ( 3 Factoring a Trinomial 148719 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (x - 1)(x - 4), (x-4)(x-1)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2.
x2 - 5x + 4
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (x - 1)(x - 4).
Question 2b of 20 ( 3 Factoring a Trinomial 245864 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (x - 5)(x - 1), (x - 1)(x - 5)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as
x^2.
x2 - 6x + 5
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (x - 5)(x - 1).
Question 2c of 20 ( 3 Factoring a Trinomial 245865 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (x - 6)(x - 1), (x - 1)(x - 6)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2.
x2 - 7x + 6
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (x - 6)(x - 1).
Question 3a of 20 ( 3 Factoring a Trinomial 148720 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (x + 8)(x - 6), (x-6)(x+8)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as
x^2. x2 + 2x - 48
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (x + 8)(x - 6).
Question 3b of 20 ( 3 Factoring a Trinomial 245866 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (x + 9)(x - 7), (x - 7)(x + 9)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2.
x2 + 2x - 63
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (x + 9)(x - 7).
Question 3c of 20 ( 3 Factoring a Trinomial 245867 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (x + 7)(x - 5), (x - 5)(x + 7)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as
x^2. x2 + 2x - 35
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (x + 7)(x - 5).
Question 4a of 20 ( 3 Factoring a Trinomial 148721 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (2x + 3)(x + 4), (x+4)(2x+3)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2.
2x2 + 11x + 12
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (2x + 3)(x + 4).
Question 4b of 20 ( 3 Factoring a Trinomial 245868 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (2x + 3)(x + 5), (x + 5)(2x + 3)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2. 2x2 + 13x + 15
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (2x + 3)(x + 5).
Question 4c of 20 ( 3 Factoring a Trinomial 245869 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (2x + 5)(x + 3), (x + 3)(2x + 5)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as
x^2. 2x2 + 11x + 15
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (2x + 5)(x + 3).
Question 5a of 20 ( 3 Factoring a Trinomial 148722 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (5x - 1)(x + 5), (x+5)(5x-1)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2.
5x2 + 24x - 5
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (5x - 1)(x + 5).
Question 5b of 20 ( 3 Factoring a Trinomial 245870 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (6x - 1)(x + 6), (x + 6)(6x - 1)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2.
6x2 + 35x - 6
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (6x - 1)(x + 6).
Question 5c of 20 ( 3 Factoring a Trinomial 245871 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (4x - 1)(x + 4), (x + 4)(4x - 1)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2.
4x2 + 15x - 4
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (4x - 1)(x + 4).
Question 6a of 20 ( 3 Factoring a Trinomial 148723 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (4x + 3)(2x - 1), (2x-1)(4x+3)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2. 8x2 + 2x - 3
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (4x + 3)(2x - 1).
Question 6b of 20 ( 3 Factoring a Trinomial 245872 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (3x + 4)(2x - 1), (2x - 1)(3x + 4)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as
x^2.
6x2 + 5x - 4
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (3x + 4)(2x - 1).
Question 6c of 20 ( 3 Factoring a Trinomial 245873 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (4x - 1)(2x + 3), (2x + 3)(4x - 1)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as
x^2. 8x2 + 10x - 3
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (4x - 1)(2x + 3).
Question 7a of 20 ( 3 Difference of Squares 148724 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (2x + 9)(2x - 9), (2x-9)(2x+9)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2. 4x2 - 81
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (2x + 9)(2x - 9).
Question 7b of 20 ( 3 Difference of Squares 245874 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (3x + 4)(3x - 4), (3x - 4)(3x + 4)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2. 9x2 - 16
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (3x + 4)(3x - 4).
Question 7c of 20 ( 3 Difference of Squares 245875 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (4x + 5)(4x - 5), (4x - 5)(4x + 5)
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2. 16x2 - 25
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (4x + 5)(4x - 5).
Question 8a of 20 ( 3 Perfect Square Trinomials 148725 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (x - 5)(x - 5), (x-5)^2
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2. x2 - 10x + 25
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (x - 5)(x - 5).
Question 8b of 20 ( 3 Perfect Square Trinomials 245876 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (x - 6)(x - 6), (x - 6)^2
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2. x2 - 12x + 36
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (x - 6)(x - 6).
Question 8c of 20 ( 3 Perfect Square Trinomials 245877 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (x - 7)(x - 7), (x - 7)^2
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2.
x2 - 14x + 49
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (x - 7)(x - 7).
Question 9a of 20 ( 3 Perfect Square Trinomials 148726 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (3x + 2)(3x + 2), (3x+2)^2
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as
x^2.
9x2 + 12x + 4
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (3x + 2)(3x + 2).
Question 9b of 20 ( 3 Perfect Square Trinomials 245878 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (4x + 3)(4x + 3), (4x + 3)^2
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2.
16x2 + 24x + 9
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (4x + 3)(4x + 3).
Question 9c of 20 ( 3 Perfect Square Trinomials 245879 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: (2x + 3)(2x + 3), (2x + 3)^2
Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as
x^2. 4x2 + 12x + 9
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: (2x + 3)(2x + 3).
Question 10a of 20 ( 3 Zero Product Rule 148727 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: Which of the following are solutions to the quadratic equation? Check all that apply.
x2 + 2x - 8 = 0
Correct Answers:
Choice
A. 28
*B. 2
C. 4
*D. -4
E. -1
F. 1
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: 2 and -4.
Question 10b of 20 ( 3 Zero Product Rule 245880 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: Which of the following are solutions to the quadratic equation? Check all that apply.
x2 + 3x - 10 = 0
Correct Answers:
Choice
A. 28
B. -2
*C. -5
D. -4
*E. 2
F. 1
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: -5 and 2.
Question 10c of 20 ( 3 Zero Product Rule 245881 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: Which of the following are solutions to the quadratic equation? Check all that apply.
x2 + x - 12 = 0
Correct Answers:
Choice
A. 28
B. 2
*C. -4
D. 4
E. -1
*F. 3
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: -4 and 3.
Question 11a of 20 ( 3 Zero Product Rule 148728 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: Which of the following are solutions to the quadratic equation? Check all that apply.
2x2 + 7x - 2 = - x2 + 2x
Correct Answers:
Choice
A. 2
B. 1
*C. -2
D. 3
*E.
F. -
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: -2 and .
Question 11b of 20 ( 3 Zero Product Rule 245882 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: Which of the following are solutions to the quadratic equation? Check all that apply.
2x2 + 9x - 3 = - x2 + x
Correct Answers:
Choice
*A. -3
B. 1
C. -2
D. 3
*E.
F. -
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: -3 and .
Question 11c of 20 ( 3 Zero Product Rule 245883 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: Which of the following are solutions to the quadratic equation? Check all that apply.
2x2 + 14x - 4 = - x2 + 3x
Correct Answers:
Choice
*A. -4
B. 1
C. 4
*D.
E. 3
F. -
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: -4 and .
Question 12a of 20 ( 3 Factoring a Trinomial 148729 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: Which of the following are solutions to the quadratic equation? Check all that apply.
x2 + 8x + 16 = 7
Correct Answers:
Choice
*A. - 4
B. 4
C. -4
D.
*E. - - 4
F. + 4
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: - 4 and - - 4.
Question 12b of 20 ( 3 Factoring a Trinomial 245884 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: Which of the following are solutions to the quadratic equation? Check all that apply.
x2 + 10x + 25 = 7
Correct Answers:
Choice
A. 5
*B. - 5
C. -5
D.
E. + 5
*F. - - 5
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: - 5 and - - 5.
Question 12c of 20 ( 3 Factoring a Trinomial 245885 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: Which of the following are solutions to the quadratic equation? Check all that apply.
x2 + 12x + 36 = 7
Correct Answers:
Choice
A. -6
*B. - 6
C. -6
D.
*E. - - 6
F. + 6
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: - 6 and - - 6.
Question 13a of 20 ( 3 Completing the Square 148730 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: 12
Question: What value of b makes the polynomial below a perfect square?
x2 - bx + 36
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: 12.
Question 13b of 20 ( 3 Completing the Square 245886 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: 14
Question: What value of b makes the polynomial below a perfect square?
x2 - bx + 49
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: 14.
Question 13c of 20 ( 3 Completing the Square 245887 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: 10
Question: What value of b makes the polynomial below a perfect square?
x2 - bx + 25
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: 10.
Question 14a of 20 ( 3 Completing the Square 148731 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: 49/4, 12.25, 12 1/4
Question: What value of c makes the polynomial below a perfect square? If necessary, use the slash mark ( / ) as a
fraction bar. x2 + 7x + c
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: 49/4.
Question 14b of 20 ( 3 Completing the Square 245888 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: 25/4, 6.25, 6 1/4
Question: What value of c makes the polynomial below a perfect square? If necessary, use the slash mark ( / ) as a fraction bar.
x2 + 5x + c
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: 25/4.
Question 14c of 20 ( 3 Completing the Square 245889 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: 81/4, 20.25, 20 1/4
Question: What value of c makes the polynomial below a perfect square? If necessary, use the slash mark ( / ) as a fraction bar. x2 + 9x + c
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: 81/4.
Question 15a of 20 ( 3 Completing the Square 148732 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: 9
Question: What value of c makes the polynomial below a perfect square?
4x2 + 12x + c
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: 9.
Question 15b of 20 ( 3 Completing the Square 245890 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: 16
Question: What value of c makes the polynomial below a perfect square?
4x2 + 16x + c
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: 16.
Question 15c of 20 ( 3 Completing the Square 245891 )
Maximum Attempts: 1
Question Type: Text Fill In Blank
Maximum Score: 3
Is Case Sensitive: false
Correct Answer: 4
Question: What value of c makes the polynomial below a perfect square?
9x2 + 12x + c
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answer is: 4.
Question 16a of 20 ( 3 Standard Form of Quadratic Equations 154436 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: Which of the following are solutions to the quadratic equation? Check all that apply.
2x2 + 5x - 10 = x2 + 4
Correct Answers:
Choice
A. 3
B. 7
*C. -7
D.
*E. 2
F. -
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: -7 and 2.
Question 16b of 20 ( 3 Standard Form of Quadratic Equations 245892 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: Which of the following are solutions to the quadratic equation?Check all that apply.
2x2 + 6x - 10 = x2 + 6
Correct Answers:
Choice
*A. 2
*B. -8
C. 8
D.
E. -2
F. -
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: 2 and -8.
Question 16c of 20 ( 3 Standard Form of Quadratic Equations 245893 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: Which of the following are solutions to the quadratic equation? Check all that apply.
2x2 + 7x - 14 = x2 + 4
Correct Answers:
Choice
*A. 2
B. 9
C. -7
D.
*E. -9
F. -
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: 2 and -9.
Question 17a of 20 ( 3 Standard Form of Quadratic Equations 148734 )
Maximum Attempts: 1
Question Type: Multiple Choice
Maximum Score: 3
Question: Use the quadratic formula to find the solution to the quadratic equation below.
x2 - 5x - 4 = 0
Choice Feedback
A. x =
B. x =
C. x =
D. x =
*E. x =
Correct!
F. x =
Global Incorrect Feedback
The correct answer is: x = .
Question 17b of 20 ( 3 Standard Form of Quadratic Equations 245894 )
Maximum Attempts: 1
Question Type: Multiple Choice
Maximum Score: 3
Question: Use the quadratic formula to find the solution to the quadratic equation below.
x2 - 6x - 5 = 0
Choice Feedback
A. x =
B. x =
C. x =
D. x =
*E. x =
Correct!
F. x =
Global Incorrect Feedback
The correct answer is: x = .
Question 17c of 20 ( 3 Standard Form of Quadratic Equations 245895 )
Maximum Attempts: 1
Question Type: Multiple Choice
Maximum Score: 3
Question: Use the quadratic formula to find the solution to the quadratic equation below.
x2 - 7x - 3 = 0
Choice Feedback
A. x =
B. x =
C. x =
D. x =
*E. x =
Correct!
F. x =
Global Incorrect Feedback
The correct answer is: x = .
Question 18a of 20 ( 3 Standard Form of Quadratic Equations 154442 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: Use the quadratic formula to find the solutions to the quadratic equation below. Check all that apply.
5x2 - x - 4 = 0
Correct Answers:
Choice
*A.
B. -1
C.
D.
*E. 1
F.
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: and 1.
Question 18b of 20 ( 3 Standard Form of Quadratic Equations 245896 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: Use the quadratic formula to find the solutions to the quadratic equation below. Check all that apply.
4x2 - x - 5 = 0
Correct Answers:
Choice
A.
*B. -1
C.
D.
E. 1
*F.
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: -1 and .
Question 18c of 20 ( 3 Standard Form of Quadratic Equations 245897 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: Use the quadratic formula to find the solutions to the quadratic equation below. Check all that apply.
3x2 - x - 2 = 0
Correct Answers:
Choice
A.
B. -1
C.
*D. -
*E. 1
F.
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: - and 1.
Question 19a of 20 ( 3 Graphing Quadratic Equations 148584 )
Maximum Attempts: 1
Question Type: Multiple Choice
Maximum Score: 3
Question: Which of the following combinations represents the vertex and two x-intercepts of the function given below?
y = x2 - 2x - 24
Choice Feedback
*A. Vertex: (1,-25); Intercepts: x = 6, -4 Correct!
B. Vertex: (7,5); Intercepts: x = 6, 8
C. Vertex: (-1,-21); Intercepts: x = 6, 4
D. Vertex: (0,0); Intercepts: x = -4, 6
Global Incorrect Feedback
The correct answer is:
Vertex: (1,-25); Intercepts: x = 6, -4.
Question 19b of 20 ( 3 Graphing Quadratic Equations 245898 )
Maximum Attempts: 1
Question Type: Multiple Choice
Maximum Score: 3
Question: Which of the following combinations represents the vertex and two x-intercepts of the function given below?
y = x2 - 2x - 35
Choice Feedback
A. Vertex: (1,-25); Intercepts: x = 6, -4
B. Vertex: (7,5); Intercepts: x = 7, 8
*C. Vertex: (1,-36); Intercepts: x = 7, -5 Correct!
D. Vertex: (0,0); Intercepts: x = -4, -5
Global Incorrect Feedback
The correct answer is:
Vertex: (1,-36); Intercepts: x = 7, -5.
Question 19c of 20 ( 3 Graphing Quadratic Equations 245899 )
Maximum Attempts: 1
Question Type: Multiple Choice
Maximum Score: 3
Question: Which of the following combinations represents the vertex and two x-intercepts of the function given below?
y = x2 - 2x - 48
Choice Feedback
A. Vertex: (1,-40); Intercepts: x = 6, 7
*B. Vertex: (1,-49); Intercepts: x = 8, -6 Correct!
C. Vertex: (-1,-21); Intercepts: x = 6, 4
D. Vertex: (0,0); Intercepts: x = -4, 6
Global Incorrect Feedback
The correct answer is: Vertex: (1,-49); Intercepts: x = 8, -6.
Question 20a of 20 ( 2 Standard Form of Quadratic Equations 148585 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: The graph of a certain quadratic function does not cross the x-axis. Which of the following are possible values
for the discriminant? Check all that apply.
Correct Answers:
Choice
*A. -25
B. 0
C. 18
*D. -7
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: -25 and -7.
Question 20b of 20 ( 2 Standard Form of Quadratic Equations 245900 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: The graph of a certain quadratic function does not cross the x-axis. Which of the following are possible values
for the discriminant? Check all that apply.
Correct Answers:
Choice
A. 25
*B. -4
C. 0
*D. -18
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: -4 and -18.
Question 20c of 20 ( 2 Standard Form of Quadratic Equations 245901 )
Maximum Attempts: 1
Question Type: Multiple Response
Maximum Score: 3
Question: The graph of a certain quadratic function does not cross the x-axis. Which of the following are possible values
for the discriminant? Check all that apply.
Correct Answers:
Choice
A. 0
B. 3
*C. -18
*D. -1
Attempt Incorrect Feedback
1st
Correct Feedback
Global Incorrect Feedback
The correct answers are: -18 and -1.