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 7.2 - Rational Exponents - Exercise Set: 6

Answer

$-3$

Work Step by Step

RECALL: $a^{\frac{1}{n}}=\sqrt[n]{a}$ $\sqrt [n] {a^{n}}=a$ With $n=4$, use the rules above to obtain: $-81^{\frac{1}{4}} \\=-(81^{\frac{1}{4}}) \\=-\sqrt[4]{81} \\ -\sqrt[4] {3^{4}} \\-3$
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