#### Answer

$3\sqrt{5}$

#### Work Step by Step

Using the properties of radicals, the given expression, $
\sqrt{45}
,$ simplifies to
\begin{array}{l}\require{cancel}
\sqrt{9\cdot5}
\\\\=
\sqrt{(3)^2\cdot5}
\\\\=
3\sqrt{5}
.\end{array}

Published by
Pearson

ISBN 10:
0-32184-874-8

ISBN 13:
978-0-32184-874-1

$3\sqrt{5}$

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