Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 8 - Mid-Chapter Check Point: 11

Answer

$-19\sqrt{10}$

Work Step by Step

$-3\sqrt{90}-5\sqrt{40}$ Factor out perfect squares. $-3\sqrt{(9)(10)}-5\sqrt{(4)(10)}$ Simplify. $-3(3)\sqrt{10}-5(2)\sqrt{10}$ $-9\sqrt{10}-10\sqrt{10}$ Combine like radicands. $-19\sqrt{10}$
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