Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 7 - Section 7.1 - Radical Expressions and Functions - Exercise Set: 79

Answer

$|y|$

Work Step by Step

RECALL: (i) $\sqrt[n]{a^n} = a$ when $n$ is odd (ii) $\sqrt[n]{a^n}=|a|$ when $n$ is even Use the rule (ii) above to obtain: $\sqrt[4]{y^4}=|y|$
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