Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter R - Review of Basic Concepts - R.7 Radical Expressions - R.7 Exercises: 16

Answer

$-7$

Work Step by Step

RECALL: $\sqrt[n]{a} = a^{1/n}$ Use the rule above by to obtain: $\sqrt[3]{-343} = (-343)^{1/3}$ Since $-343=(-7)^3$, then $\color{blue}{(-343)^{1/3} = -7}$
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