Find the value of the following expression, when $x = - 1$ .
$x^{2} + 2 x + 1$ .

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Solution

$x = - 1$
$x^{2} + 2 x + 1$
${(- 1)}^{2} + 2 (- 1) + 1$
$1 - 2 + 1 = 0$

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