X(x(x-1))+6=x(x+3)(x-4)

Question

X(x(x-1))+6=x(x+3)(x-4)

Answer 1

X(x^2 - x) + 6 = x( x^2 - x - 12)
x^3 - x^2 + 6 = x^3 - x^2 - 12x
x^3 - x^3 - x^2 + x^2 + 12x = - 6
12x = - 6
x = - 6/12
x = - 0,5