Answer
$8m^3-3m-7$
Work Step by Step
By combining like terms, the given expression, $
(4m^3-7m^2+m-5)+(4m^3+7m^2-4m-2)
$, simplifies to
\begin{array}{l}
(4m^3+4m^3)+(-7m^2+7m^2)+(m-4m)+(-5-2)
\\\\=
8m^3+0m^2-3m-7
\\\\=
8m^3-3m-7
.\end{array}
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: 17
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