Answer
$r\sqrt r$
Work Step by Step
$\sqrt r^{3}=\sqrt (r^{2}\times r)=\sqrt r^{2}\times \sqrt r=r\sqrt r$
We know that $\sqrt r^{2}=r$, because $(r)^{2}=r^{2}$.
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter P - Summary, Review, and Test - Review Exercises - Page 90: 44
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