Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Chapter 8 - Radical Functions - 8.2 Simplifying, Adding, and Subtracting Radicals - 8.2 Exercises - Page 634: 58

Answer

Frank was wrong because he added the radicands as well as the indices of the radicals. The correct answer is $52x\sqrt[3]{xy}$.

Work Step by Step

Frank was wrong because he added the radicands as well as the indices of the radicals. The correct solution and answer is: $10x\sqrt[3]{xy}+42x\sqrt[3]{xy} \\=(10x+42x)\sqrt[3]{xy} \\=52x\sqrt[3]{xy}$
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