Factorise:
$x^{2} - 22 x + 117$

(x - 13) (x + 9)

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(x + 23) (x - 9)

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(x - 13) (x - 9)

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(x - 23) (x - 9)

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Solution

The correct option is C $(x - 13) (x - 9)$
$x^{2} - 22 x + 117$
$x^{2} - 13 x - 9 x + 117$
$x (x - 13) - 9 (x - 13)$
$(x - 13) (x - 9)$

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