#### Answer

$|2x+7|$

#### Work Step by Step

Using $\sqrt{x^2}=|x|$, the given expression, $
\sqrt{4x^2+28x+49}
,$ simplifies to
\begin{array}{l}
\sqrt{(2x+7)^2}
\\\\=
|2x+7|
.\end{array}

Published by
Pearson

ISBN 10:
0-32184-874-8

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

$|2x+7|$

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