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 - Page 75: 44



Work Step by Step

Factor the radicand so that one factor is a perfect fourth power to obtain: $=-\sqrt[4]{81(3)} \\=-\sqrt[4]{3^4(3)}$ Bring out the fourth root of the perfect fourth power factor to obtain: $=\color{blue}{-3\sqrt[4]{3}}$
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