3 2 3 2 x - 3*x + 2*x - 6 > 2*x - x + 4*x - 2
2*x + x^3 - 3*x^2 - 6 > 4*x + 2*x^3 - x^2 - 2
And(-oo < x, x < -2)
(-oo < x)∧(x < -2)
(-oo, -2)
x in Interval.open(-oo, -2)