#### Answer

$x=-3$

#### Work Step by Step

Since $x+3$ is squared, we will have symmetry about the zero of $x+3$
$x+3=0$. This means:
$$ x = -3 $$

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Published by
McDougal Littell

ISBN 10:
0618595414

ISBN 13:
978-0-61859-541-9

$x=-3$

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