Factorize the equation: $x^{2} - 9 x - 36$

(x + 12) (x + 3)

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(x + 12) (x - 3)

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(x - 12) (x - 3)

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(x - 12) (x + 3)

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Solution

The correct option is C $(x - 12) (x + 3)$
Given that: $x^{2} - 9 x - 36$
$= x^{2} - 12 x + 3 x - 36$
$= x (x - 12) + 3 (x - 12)$
$= (x - 12) (x + 3)$
Therefore Option D is correct.

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