2 x > 4*x
x^2 > 4*x
Or(And(-oo < x, x < 0), And(4 < x, x < oo))
((-oo < x)∧(x < 0))∨((4 < x)∧(x < oo))
(-oo, 0) U (4, oo)
x in Union(Interval.open(-oo, 0), Interval.open(4, oo))