Question

If f(x)=3x^2-9 and g(x)=x^2+1 find (f+g)(x)

Answer 1

4x^2 -8

Explanation:

f(x)=3x^2-9

g(x)=x^2+1

(f+g)(x)=3x^2-9 +x^2+1

Combine like terms

= 4x^2 -8