Answer
$3$
Work Step by Step
$81=3^{4}$
$\sqrt[4]{81}= \sqrt[4]{3^{4}}=3$
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 7 - Exponents and Exponential Functions - 7-5 Rational Exponents and Radicals - Practice and Problem-Solving Exercises - Page 450: 16
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