Answer
$-63x^3\sqrt 3$
Work Step by Step
Separate the radical to make the expression easier to simplify.
$-21\times\sqrt 9\times\sqrt 3\times\sqrt x^9$
Simplify
$-21\times 3\times\sqrt 3\times x^3$
Answer: $-63x^3\sqrt 3$
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 10 - Radical Expressions and Equations - 10-2 Simplifying Radicals - Practice and Problem-Solving Exercises - Page 623: 19
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