Starter
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Starter Starter Multiply the following Multiply the following 1. 1. 2a 2a x x 3b 3b 2. 2. 3s 3s x x 4t 4t 3. 3. 4d 4d x x 6d 6d 4. 4. 3a 3a x x a a x x b b 5. 5. 5y 5y x x 4z 4z x x y y
description
Starter. Multiply the following 2a x 3b 3s x 4t 4d x 6d 3a x a x b 5y x 4z x y. Learning Objectives: To be able to expand brackets in algebra. Key Words Expanding Expression Algebra brackets. Expanding brackets. L.O : To be able expand brackets in algebra. 2(3a+2). - PowerPoint PPT Presentation
Transcript of Starter
StarterStarter
Multiply the followingMultiply the following
1.1. 2a 2a x x 3b3b
2.2. 3s 3s xx 4t 4t
3.3. 4d 4d xx 6d 6d
4.4. 3a 3a xx a a xx b b
5.5. 5y 5y xx 4z 4z xx y y
Expanding brackets Expanding brackets
Learning Learning Objectives:Objectives:
To be able to expand To be able to expand
brackets in algebra. brackets in algebra. Key WordsKey Words ExpandingExpanding Expression Expression AlgebraAlgebra bracketsbrackets
L.O : L.O : To be able expand brackets in algebra.To be able expand brackets in algebra.
2(3a+2)2(3a+2)
2 (2 (3a3a+2+2) ) = =
6a6a +4+4
L.O : L.O : To be able expand brackets in algebra.To be able expand brackets in algebra.
3(2b+1)3(2b+1)
3 (3 (2b2b+1+1) ) = =
6b6b +3+3
L.O : L.O : To be able expand brackets in algebra.To be able expand brackets in algebra.
5(4t+5s)5(4t+5s)
5 (5 (4t4t+5s+5s) ) = =
20t20t +25 +25 ss
L.O : L.O : To be able expand brackets in algebra.To be able expand brackets in algebra.
3(2d-3e)3(2d-3e)
3 (3 (2d2d-3e-3e) ) ==
6d6d -9e-9e
L.O : L.O : To be able expand brackets in algebra.To be able expand brackets in algebra.
7a(2b-3c)7a(2b-3c)
7a (27a (2bb-3c-3c) =) =14ab14ab --21a21acc
L.O : L.O : To be able expand brackets in algebra.To be able expand brackets in algebra.
Expand the following Expand the following bracketsbrackets
1.1. 4(2a+4)4(2a+4)
2.2. 5(3b-c)5(3b-c)
3.3. 3(4b-2c)3(4b-2c)
4.4. 6(3h-4k)6(3h-4k)
5.5. 8( 3r-2q-s) 8( 3r-2q-s)
AnswerAnswer
1.1. 8a+168a+16
2.2. 15b-5c15b-5c
3.3. 12b-6c12b-6c
4.4. 18h-24k18h-24k
5.5. 24r-16q-8s24r-16q-8s
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http://www.mymaths.co.uk/gold/http://www.mymaths.co.uk/gold/brackets/bracketsMovie.htmlbrackets/bracketsMovie.html
Expanding brackets and simplifying
Expand and simplify: 2(3n – 4) + 3(3n + 5)
We need to multiply out both brackets and collect together like terms.
6n – 8 + 9n + 15
= 6n + 9n – 8 + 15
= 15n + 7
2(3n – 4) + 3(3n + 5) =
We need to multiply out both brackets and collect together like terms.
15a + 10b – 2a – 5ab
= 15a – 2a + 10b – 5ab
= 13a + 10b – 5ab
Merit Question 5 Minutes
5(3a + 2b) – a(2 + 5b) =
Expand and simplify: 5(3a + 2b) – a(2 + 5b)
PlenaryPlenary
Expand the following brackets, write your Expand the following brackets, write your answer using the mini white board. answer using the mini white board.
2( 3y+3)2( 3y+3) 6y+66y+6 3(5t-2q)3(5t-2q) 15t-6q15t-6q 5(p-2r)5(p-2r) 5p-10r5p-10r 3s(2t-u-4v)3s(2t-u-4v) 6st-3su-12sv6st-3su-12sv 8a(3d+2e-5f)8a(3d+2e-5f) 24ad+16ae-40af24ad+16ae-40af
