Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 7 - Review: 30



Work Step by Step

$(-64)^{-\frac{1}{3}}=\frac{1}{(-64)^{\frac{1}{3}}}=\frac{1}{\sqrt[3] (-64)}=\frac{1}{(-4)}=-\frac{1}{4}$ We know that $\sqrt[3] (-64)=-4$, because $(-4)^{3}=-4\times-4\times-4=-64$.
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