Answer
$2$
Work Step by Step
We use $\sqrt[4] {a^4}=a$ to obtain:
$\sqrt[4]{16}=\sqrt[4]{2^4}=2$
(Because $2^4=16$.)
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter R - Section R.8 - nth Roots; Rational Exponents - R.8 Assess Your Understanding - Page 78: 12
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