Question 916809

{{{f(x)=x^2-9}}}

{{{g(x)=4x+16}}}

find f+g

{{{f+g=(x^2-9)+(4x+16)}}}

{{{f+g=x^2-9+4x+16}}}

{{{f+g=x^2+4x+16-9}}}

{{{f+g=x^2+4x+7}}}