Answer
Not a real number
Work Step by Step
We know that $\sqrt[4] -16$ is not a real number, because there is no real number $a$ such that $a^{4}=-16$.
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter P - Prerequisites: Fundamental Concepts of Algebra - Exercise Set P.3 - Page 48: 59
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