Question

Please help!

Factor the expression x2 − 4x − 12.

A.
(x − 6)(x − 2)

B.
(x − 6)(x + 2)

C.
(x − 4)(x − 3)

D.
(x − 4)(x + 3)

Answer 1

Answer: I know its not up there. When I did that I got (x+6)(x-2)

Answer 2

B. (x - 6)(x + 2).

Explanation:

x^2 - 4x - 12

We need 2 numbers whose product is the last number -12 and whose sum is the coefficient of x (-4).

These numbers are -6 and + 2.

So the factors are (x - 6)(x + 2).