Answer
$10\sqrt 2x$
Work Step by Step
$\sqrt 200x=\sqrt (100\times2x)=\sqrt 100\times\sqrt 2x=10\sqrt 2x$
We know that $\sqrt 100=10$, because $10^{2}=100$.
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 12 - Cumulative Review - Page 913: 32
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