College Algebra (6th Edition)

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

Chapter P - Summary, Review, and Test - Review Exercises: 42

Answer

$2x\sqrt3$

Work Step by Step

$\sqrt 12x^{2}=\sqrt(4x^{2}\times3)=\sqrt (4x^{2})\times\sqrt3=2x\sqrt3$ We know that $\sqrt(4x^{2})=2x$, because $(2x)^{2}=2^{2}x^{2}=4x^{2}$.
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