Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 7 - Review Exercises: 57

Answer

$-5\sqrt 5$

Work Step by Step

$-\sqrt 125=-(\sqrt (25\times5))=-(\sqrt 25\times\sqrt 5)=-(5\sqrt 5)=-5\sqrt 5$ We know that $\sqrt 25=5$, because $5^{2}=25$.
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