Answer
$-3\sqrt[4]{3}$
Work Step by Step
Factor 243 into $3(3^4)$.
$-\sqrt[4]{243}=-\sqrt[4]{3(3^4)}$
Get the fourth root of $3^4$.
$-\sqrt[4]{243}=-3\sqrt[4]{3}$
College Algebra (11th Edition)
by Lial, Margaret L.; Hornsby John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671791
ISBN 13:
978-0-32167-179-0
Chapter R - Section R.7 - Radical Expressions - R.7 Exercises - Page 67: 36
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