Question

given that f(x)= x sqaured +17x+70 and g(x)=x+10 find (f+g)(x)and Express the result in standard form

Answer 1

Given that;

$\begin{gathered} f(x)=x^2+17x+70 \\ g(x)=x+10 \\ (f+g)(x)=(x^2+17x+70+x+10)(x) \\ =(x^2+18x+80)(x) \\ =x^3+18x^2+80x \end{gathered}$