Answer
$2i\sqrt{2}$
Work Step by Step
Using $i=\sqrt{-1}$ and the properties of radicals, the expression $
\sqrt{-8}
$ simplifies to
\begin{array}{l}
\sqrt{4\cdot2}\cdot\sqrt{-1}
\\=
2i\sqrt{2}
.\end{array}
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 7 - Review - Page 470: 127
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