Question

factor x² - 4 A) (x + 2) (x - 2)B) (x + 2)²C) (x - 2)² D) (x - 4) (x + 4)

Answer 1

To factor the polynomial, we will use the difference of two square formula

Thus, for

$(x^2-4)$

we will have

$(x^2-4)=(x^2-2^2)$

Hence

$(x^2-2^2)=(x+2)(x-2)$

Thus the answer is

$(x+2)(x-2)$

Option A is correct