Question

Factorise :
${x}^{2} - 4x - 12 = 0$
when x belongs to N
​

Answer 1

$\sf\underline{Answer:}$

${x}^{2} - 4x - 12 = 0$

${x}^{2} + 2x - 6x - 12 = 0$

$x(x + 2) - 6(x + 2) = 0$

$(x - 6)(x + 2) = 0$

$x = 6 \: or \: - 2$

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