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