Question

Factorise
1) 64a²-49b²
2) x²+8x+15
3) a²-6a+5​

Answer 1

1) 64a²-49 b²= (8a)²-(7b)²

=a²-b²=(a+b)(a-b)

=(8a+7b)(8a-7b)

2)x²+8x+ 15 =(x+5)(x+3)

3)a²-6a+5 = (a-6)(a+1)

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