Question

Solve:
$( {a}^{2} - 2a - 15) \div (a - 5)$
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Answer 1

Answer:

$\frac{( {a}^{2} - 5a + 3a - 15) }{(a - 5)}$

$\frac{a(a - 5) + 3(a - 5)}{(a - 5)}$

$\frac{(a - 5)(a + 3)}{(a - 5)}$

$(a + 3)$