Question

x square minus 4x minus 12 is equals to zero solve this question ​

Answer 1

x^2-4x-12=O

x^2-4x =12

x^2-x. =3

......only this much i am able to do

Answer 2

$x {}^{2} - 4x - 12 = 0 \\ = > x {}^{2} - 6x + 2x - 12 = 0 \\ = > x(x - 6) + 2(x - 6) = 0 \\ = > (x - 6)(x + 2) = 0 \\ = >x - 6 = 0 \: \: or \: \: x + 2 = 0 \\ = > x = 6 \: \: or \: \: x = - 2$

Hope it helps you... thanks