If f(x)=x/4-3 and g(x)=4x^2+2x-4 find (f+g)(x) ?

1 Answer
Jun 15, 2018

(f+g)(x) = 4x^2+9/4x-7

Explanation:

(f+g)(x) = f(x)+g(x)

Substitute f(x)=x/4-3:

(f+g)(x) = x/4-3+g(x)

Substutitute g(x)=4x^2+2x-4:

(f+g)(x) = x/4-3+4x^2+2x-4

Combine like terms:

(f+g)(x) = 4x^2+9/4x-7