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: 55

Answer

Matt was wrong because instead of copyingr/retaining the radicand, he added the radicands together. The correct answer is $11\sqrt5$.

Work Step by Step

Matt was wrong because he added the radicands together. The correct answer is: $8\sqrt5 + 3\sqrt5 = (8+3)\sqrt5 = 11\sqrt5$
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