Answer
$4|xy|$
Work Step by Step
Using $\sqrt[n]{x^n}=|x|$ where $n$ is even, the given expression, $
\sqrt[4]{(4xy)^4}
,$ is equivalent to
\begin{array}{l}\require{cancel}
|4xy|
\\\\=
4|xy|
.\end{array}
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 7 - Test - Page 470: 9
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