Factor. x(x+2)-7(x+2)

Question

Select the correct choice below.

(a) x(x+2)-7(x+2)=

(b) The expression is not factorable.

 

Answer 1

Using the distributive law, ab + ac = a(b+c) with a = x+2, b = x, and c = -7 you get

x(x+2) - 7(x+2) = (x - 7)(x + 2) ← The factored form.