#### Answer

$x^2 + 2x + 1 = 0$

#### Work Step by Step

The following equation has -1 has a solution.
$(x+1)^2 = 0$
Therefore
$x^2 + 2x + 1 = 0$
has -1 as a solution.

Published by
Pearson

ISBN 10:
0321726391

ISBN 13:
978-0-32172-639-1

$x^2 + 2x + 1 = 0$

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