(x + 4)*(x - 8) > 3*(x - 8)
(x - 8)*(x + 4) > 3*(x - 8)
Or(And(-oo < x, x < -1), And(8 < x, x < oo))
((-oo < x)∧(x < -1))∨((8 < x)∧(x < oo))
(-oo, -1) U (8, oo)
x in Union(Interval.open(-oo, -1), Interval.open(8, oo))