2 2 x - 3*x - 5 x - 6*x + 3 ------------ + ------------ <= 2*x + 1 x - 4 x - 6
(x^2 - 3*x - 5)/(x - 4) + (x^2 - 6*x + 3)/(x - 6) <= 2*x + 1
Or(And(x <= 3, -oo < x), And(4 < x, x < 6))
((x <= 3)∧(-oo < x))∨((4 < x)∧(x < 6))
(-oo, 3] U (4, 6)
x in Union(Interval(-oo, 3), Interval.open(4, 6))