Answer
False.
$\sqrt {-18}\sqrt {-2}\ne\sqrt {(-18)(-2)}$
Work Step by Step
$\sqrt {-18}\sqrt {-2}=3\sqrt 2i\sqrt 2i=3(\sqrt 2)^2i^2=3(2)(-1)=-6$
$\sqrt {(-18)(-2)}=\sqrt {36}=6$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 1 - Review Exercises - Page 154: 119
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