Answer
$2\sqrt[6] 2$
Work Step by Step
$\sqrt[6] 128=\sqrt[6] (64\times2)=\sqrt[6] 64\times\sqrt[6] 2=2\sqrt[6] 2$
We know that $\sqrt[6] 64=2$, because $2^{6}=64$.
Intermediate Algebra (12th Edition)
by Lial, Margaret L.; Hornsby, John; McGinnis, Terry
Published by
Pearson
ISBN 10:
0321969359
ISBN 13:
978-0-32196-935-4
Chapter 7 - Section 7.3 - Simplifying Radicals, the Distance Formula, and Circles - 7.3 Exercises - Page 459: 67
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