Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 10 - Radical Expressions and Equations - 10-3 Operations with Radial Expressions - Mixed Review: 71

Answer

15

Work Step by Step

$\sqrt5\times\sqrt{45}\longrightarrow$ factor out the perfect square from 45 =$\sqrt5\times\sqrt{9\times5}\longrightarrow$ multiplication property of square roots =$\sqrt5\times\sqrt9\times\sqrt5\longrightarrow$ simplify =$3\times\sqrt5\times\sqrt5\longrightarrow$ simplify =$3\times5\longrightarrow$ multiply =$15$
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