Algebra 1

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

Chapter 10 - Radical Expressions and Equations - 10-2 Simplifying Radicals - Practice and Problem-Solving Exercises: 19

Answer

$-63x^4\sqrt{3x}$

Work Step by Step

Use the multiplication property of square roots. $-21\sqrt{27x^9}=-21\sqrt{9x^8\times3x}=-21\times\sqrt{9x^8}\times\sqrt{3x}$ $=-21\times3x^4\times\sqrt{3x}=-63x^4\sqrt{3x}$
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