Answer
$(f+g)(x)=4x^{2}-2$
$(f+g)(5)=98$
Work Step by Step
$(f+g)(x)=f(x)+g(x)$
$=4x^{2}-x-3+x+1$
$=4x^{2}-2$
Plugin $x=5$ into $4x^{2}-2$.
$(f+g)(5)=4\times5^{2}-2=100-2=98$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.