Answer
$2\pi r(2r+1)$
Work Step by Step
Factoring the $GCF=
2\pi r
$, then the given expression, $
4\pi r^2+2\pi r
$ is equivalent to
\begin{array}{l}
2\pi r(2r+1)
.\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 5 - Polynomials and Factoring - 5.6 Factoring: A General Strategy - 5.6 Exercise Set - Page 344: 36
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