Use a suitable identity to get following products
$(x + 3) (x + 3)$

x^{2} - 6 x + 9

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x^{2} + 6 x + 9

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x^{2} + 6 x - 9

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x^{2} + 33 x + 9

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Solution

The correct option is B $x^{2} + 6 x + 9$
$(x + 3) (x + 3)$
Using,
$(a + b)^{2} = a^{2} + 2. a . b + b^{2}$ we get the above equation.
$= (x + 3)^{2}$
$= x^{2} + 2. x .3 + 3^{2}$
$= x^{2} + 6 x + 9$

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