Answer
$14a^2+a-8$
Work Step by Step
By combining like terms, the given expression, $
(8a^2+4a-7)+(6a^2-3a-1)
$, simplifies to
\begin{array}{l}
(8a^2+6a^2)+(4a-3a)+(-7-1)
\\\\=
14a^2+a-8
.\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: 16
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