Question

Factor the expression below.

x² - 64
A. (x+3)(x-8)
B. (x-8)(x-8)
C. (x - 16)(x - 4)
D. (x+16)(x-2)

Answer 1

b

Explanation:

Answer 2

(x + 8) (x - 8)

Explanation:

To factorise the expression follow the steps:

Think the factorising means you want like:-

( x + _ ) ( x + _ )

Now, add the numbers to get 0 & multiple together to get -64

-64 = 8 x -8

8 + -8 = 0

Now fill the numbers in the factorising mean which will give you,

( x + _ ) ( x + _ ) --> ( x + 8 ) ( x - 8 )

Therefore, the answer will be: ( x + 8 ) ( x - 8 )

I hope this will help you :)