2 -3*x 3*x ---- < ---- 10 5
-3*x/10 < 3*x^2/5
Or(And(-oo < x, x < -1/2), And(0 < x, x < oo))
((-oo < x)∧(x < -1/2))∨((0 < x)∧(x < oo))
(-oo, -1/2) U (0, oo)
x in Union(Interval.open(-oo, -1/2), Interval.open(0, oo))