Answer
$x^2+13x+40$
Work Step by Step
$$(x+8)(x+5)$$ $$=(x\times x)+(x\times 5)+(8\times x)+(8\times 5)$$ $$=x^2+5x+8x+40$$ $$=x^2+13x+40$$
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter P - Prerequisites: Fundamental Concepts of Algebra - Exercise Set P.4 - Page 61: 20
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