Question

(08.06)

What are the factors of x2 - 49? (x - 1)(x + 49)
(x - 7)(x - 7) (x - 7)(x + 7)
Prime

Answer 1

(x-7)(x+7)

Explanation:

x^2 -49

This is the difference of squares

x^2 -7^2

We know that a^2 -b^2 = (a-b)(a+b)

(x-7)(x+7)