Answer
$5x^{2}+22x+16$
Work Step by Step
$3x^{2}+15x+8+(2x^{2}+7x+8)$
$= 3x^{2}+15x+8+2x^{2}+7x+8$
Combine like terms.
$= 3x^{2}+2x^{2}+15x+7x+8+8$
$= 5x^{2}+22x+16$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 5 - Section 5.3 - Polynomials and Polynomial Functions - Exercise Set - Page 280: 69
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