Intermediate Algebra: Connecting Concepts through Application

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

Chapter 1-8 - Cumulative Review: 62

Answer

$19\sqrt x-10$

Work Step by Step

$5\sqrt x+7\sqrt {4x}-10$ =$5\sqrt x+7\sqrt {4\times x}-10$ =$5\sqrt x+7(\sqrt 4\times \sqrt x)-10$ =$5\sqrt x+7(2\times \sqrt x)-10$ =$5\sqrt x+14\sqrt x-10$ =$(5+14)\sqrt x-10$ =$19\sqrt x-10$
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