Question

a^2-3a-18 factorise it​

Answer 1

Step-by-step explanation:

$= {a}^{2} - 3a - 18 \\ \: = {a}^{2} + 3a - 6a - 18 \\ a(a + 3) - 6(a + 3) \\ = (a + 3)(a - 6)$

Answer 2

Step-by-step explanation:

$a ^{2} - 3a - 18$

$a ^{2} - 6a + 3a - 18$

$(a ^{2} - 6a)(3a - 18)$

$a(a - 6) + 3(a - 6)$

$(a - 6)(a + 3)$

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