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(x +3)^2
= x (x + 3) + 3 (x+3)
= x^2 + 3x +3x +9
= x^2 + 6x +9
correct - Mr Johari

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8x+6y+8y=8x+14y

correct - Mr Johari

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correct - Mr Johari

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Question 7 :
= 3p^2-12g -(-rp)

simplify further - Mr Johari

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3x(3x+1)+5(1-4x^2)
=9x^2+1-1+20x^2-15
29x^4-24

expansion incorrect - Mr Johari

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Group number 5
Jeremy is x years old while his sister, Elsie is 4 years younger than him. Their father is three times Jeremy’s current age. Write an algebraic expression for each of the following:

(a) Elsie’s age in 10 years’ time,

(b) Their father’s age in 8 year’s time

(c) The sum of their total age in 5 year’s time.

If their father is now 45 years old, write down the sum of their total age in 5 years’ time.

(a)x+6
(b)3x+8
(c)86

correct - Mr Johari

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(8) 3x 2x-24+4x
=6x- 48 + 8x

3x2x are referring to 3(2x) or 3x^2? - Mr Johari

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(x^2 - 3x) (-3x + 9)

include question please so that its easier for everyone to refer - Mr Johari

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-3-2(6a-2b)
=-3 -12a + 4b (Ans)

correct - Mr Johari

# data[].attributes.attachment_link.title
Expanding & Simplifying Single Brackets - Tutorial / Revision

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How to do Algebra    Part 1 1   Expanding Brackets 1

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Algebra - expanding and simplifying brackets

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https://padlet.com/nur_johari_sall/6riadoyuz6um

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https://docs.google.com/document/d/11KG4zYdsQBl5YyjLSjSm3404ZzhvsrOP4AN6c1-nkIE/edit
(refer page 16 - 18)