Answer
$\sqrt (xy)$
Work Step by Step
$\sqrt[8] (x^{4}y^{4})=(x^{4}y^{4})^{\frac{1}{8}}=x^{\frac{4}{8}}y^\frac{4}{8}=x^{\frac{1}{2}}y^\frac{1}{2}=(xy)^{\frac{1}{2}}=\sqrt (xy)$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 7 - Section 7.2 - Rational Exponents - Exercise Set - Page 425: 79
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