Calculus with Applications (10th Edition)

Published by Pearson
ISBN 10: 0321749006
ISBN 13: 978-0-32174-900-0

Chapter R - Algebra Reference - R.7 Radicals - R.7 Exercises - Page R-28: 11



Work Step by Step

Simplify each radical, when needed, to have: $=4\sqrt{7}-\sqrt{4(7)} + \sqrt{49(7)} \\=4\sqrt{7} -2\sqrt{7} + 7\sqrt{7}$ Combine like terms to have: $=(4-2+7)\sqrt{7} \\=9\sqrt{7}$
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