Answer
$-4\sqrt 2$
Work Step by Step
$-\sqrt 32=-\sqrt (16\times2)=-\sqrt 16\times\sqrt 2=-4\sqrt 2$
We know that $\sqrt 16=4$, because $4^{2}=16$.
Intermediate Algebra (12th Edition)
by Lial, Margaret L.; Hornsby, John; McGinnis, Terry
Published by
Pearson
ISBN 10:
0321969359
ISBN 13:
978-0-32196-935-4
Chapter 7 - Section 7.3 - Simplifying Radicals, the Distance Formula, and Circles - 7.3 Exercises - Page 459: 49
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