If $x = 2$ , find the value of
$x^{2} + 2 x + 1$

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Solution

Let us substitute $x = 2$ in the given expression $x^{2} + 2 x + 1$ as shown below:

$x^{2} + 2 x + 1 = 2^{2} + (2 \times 2) + 1 = 4 + 4 + 1 = 9$

Hence, $x^{2} + 2 x + 1 = 9$ if $x = 2$ .

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