Answer
$4.9a^3+5.3a^2-8.8a+4.6$
Work Step by Step
Add the polynomials then combine like terms to obtain:
$=4.9a^3+3.2a^2-5.1a+2.1a^2-3.7a+4.6
\\=4.9a^3+(3.2a^2+2.1a^2)+(-5.1a-3.7a)+4.6
\\=4.9a^3+5.3a^2+(-8.8a)+4.6
\\=4.9a^3+5.3a^2-8.8a+4.6$
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 4 - Polynomials - 4.4 Addition and Subtraction of Polynomials - 4.4 Exercise Set - Page 259: 26
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