Question

If f(x) = x2 – 2x and g(x) = 6x + 4, for which value of x does (f + g)(x) = 0? –4 –2 2 4

Answer 1

-2

Explanation:

f(x) + g(x) = x^2 - 2x +6x +4 = x^2 + 4x + 4

(f+g)(x)=0

x^2 + 4x + 4 = 0

x= -2