Question

$a2 + 15a + 56$
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Answer 1

$= > {a}^{2} + 15a + 56 \\ = > {a}^{2} + 8a + 7a + 56 \\ = > a(a + 8) + 7(a + 8) \\ = > (a + 7)(a + 8)$

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