Factorize the polynomial:
$a^{2} + 13 a + 12$

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Solution

$a^{2} + 13 a + 12$
$= a^{2} + 12 a + a + 12$
$= a (a + 12) + 1 (m + 12)$
$= (a + 12) (a + 1)$
factors are $(a + 12), (a + 1)$

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