Question

X square + 4 x minus 12 equal to zero

Answer 1

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 and 2

Answer 2

Hey

Here is your answer,

X^2 + 4x - 12 = 0
X^2 - 2x + 6x - 12 = 0
X ( x-2 ) + 6 ( x-2) = 0
( X-2 ) ( x+6 ) = 0
X-2 = 0
X = 2
X+6 = 0
X = -6

Hope it helps you!