_____________ / 2 \/ x + x - 12 > x
sqrt(x^2 + x - 12) > x
Or(And(x <= -4, -oo < x), And(12 < x, x < oo))
((x <= -4)∧(-oo < x))∨((12 < x)∧(x < oo))
(-oo, -4] U (12, oo)
x in Union(Interval(-oo, -4), Interval.open(12, oo))