Question

Which are factors of x2 – 4x – 5? Check all that apply.

(x – 5)
(x – 4)
(x – 2)
(x + 1)
(x + 5)

Answer 1

(x + 1) and (x - 5)

Explanation:

`x^2-4x-5=x^2+x-5x-5=x(x+1)-5(x+1)=(x+1)(x-5)`