#### Answer

$13$

#### Work Step by Step

Simplify the expression inside the radical sign to obtain:
$=\sqrt{169}$
Recall, square roots cancel out exponents of two. Thus, we obtain:
$=\sqrt{13^2}
\\=13$

Published by
Pearson

ISBN 10:
0-13417-894-7

ISBN 13:
978-0-13417-894-3

$13$

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