Answer
not a real number
Work Step by Step
$ \sqrt[4] (-81)=$ not a real number
We know this because there is no number $a$ such that $a^{4}=-81$.
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 9 - Cumulative Review - Page 600: 19d
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