Answer
$x^2+13x+40$
Work Step by Step
I use the FOIL method:
$(x+5)(x+8)=x^2+8x+5x+40=x^2+13x+40$
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.