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20 points (a) Expand and simplify (9x - 2)(x + 2) (b) Factorise fully 18a² + 45a (c) Factorise y² - 10y + 24
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20 points

(a) Expand and simplify (9x - 2)(x + 2)
(b) Factorise fully 18a² + 45a
(c) Factorise y² - 10y + 24

User Muhabutti
by
5.1k points

2 Answers

2 votes

Answer:

Explanation:

a). 9(x-2)(x+2)

b).

User Gregjhogan
by
5.7k points
2 votes

Answer:

(a)
9x^2+16x-4

(b)
9a(2a+5)

(c)
(y-6)(y-4)

Explanation:

(a)


(9x-2)(x+2)=


9x^2-2x+18x-4=


9x^2+16x-4

(b)


18a^2+45a=


9a(2a+5)

(c)


y^2-10y+24=


(y-6)(y-4)

Hope this helps!

User Murrekatt
by
5.3k points
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