Answer
$y^{3}$
Work Step by Step
$\sqrt[3] (y^{9})=y^{3}$
We know this because $(y^{3})^{3}=y^{3\times3}=y^{9}$.
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 7 - Sections 7.1-7.5 - Integrated Review - Radicals and Rational Exponents - Page 446: 5
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