College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter P - Prerequisites: Fundamental Concepts of Algebra - Exercise Set P.3 - Page 48: 15



Work Step by Step

$\sqrt{45x^2}$ $=\sqrt{9\cdot5\cdot x^{2}}$ $=\sqrt{9}\cdot \sqrt{x^{2}} \cdot \sqrt{5}$ $=3x\sqrt{5}$
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