Solve: $n^{2} - 19 n - 92$

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Solution

$n^{2} - 19 n - 92$
$= n^{2} - 23 n + 4 n - 92$
$= n (n - 23) + 4 (n - 23)$
$= (n - 23) (n + 4)$
$∴ n^{2} - 19 n - 92 = (n - 23) (n + 4)$ .

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