Question

factorise
${x}^{2} - 3x - 18$
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Answer 1

$= > {x}^{2} - 3x - 18 \\ \\ = > {x}^{2} - 6x + 3x - 18 \\ \\ = > x(x - 6) + 3(x - 6) \\ \\ = > (x + 3)(x - 6)$

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Hope you got it......

Answer 2

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

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

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

$x(x - 6) + 3(x - 6)$

$(x - 6)(x + 3)$

hope it helps you ✔✔✔✔✔✔✅