Answer
$-64$
Work Step by Step
Keep in mind that the index is the denominator of the exponent.
$-256^{3/4}$
$(-\sqrt [4] {256})^3$
$-(4^3)=-64$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 10 - Section 10.2 - Rational Exponents - Practice - Page 690: 8
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