Factors of $x^{2} - 3 x - 18$ are:

(x - 6) (x + 3)

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(x - 6) (x - 3)

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(x - 3)^{2}

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(x + 6)^{2}

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Solution

The correct option is D $(x - 6) (x + 3)$
$x^{2} - 3 x + 18 = x^{2} - 6 x + 3 x + 18$
$= x (x - 6) + 3 (x - 6) = (x - 6) (x + 3)$

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