#### Answer

$3$

#### Work Step by Step

$81=3^{4}$
$\sqrt[4]{81}= \sqrt[4]{3^{4}}=3$

Published by
Prentice Hall

ISBN 10:
0133281140

ISBN 13:
978-0-13328-114-9

$3$

$81=3^{4}$
$\sqrt[4]{81}= \sqrt[4]{3^{4}}=3$

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