Question

For f(x)=4x+2 and g(x)=x^2-6, find (f+g)(x)

A) 4x^3-4
B) 4x^2-16
C) x^2+4x-4
D) x^2+4x+8

Answer 1

The answer would be x^2+4x-4

Explanation:

You can solve this by plugging 4x+2 into (f+g). 4x+2 would equal f. x^2-6 would equal g. plugging them in gets you 4x+2+x^2-6. If we simplify it we would end up with x^2+4x-4