__________ / 3 - x 3 - / -------- <= x \/ 26 - 8*x
3 - sqrt((3 - x)/(26 - 8*x)) <= x
Or(And(11/4 <= x, x <= 3), And(13/4 < x, x < oo))
((11/4 <= x)∧(x <= 3))∨((13/4 < x)∧(x < oo))
[11/4, 3] U (13/4, oo)
x in Union(Interval(11/4, 3), Interval.open(13/4, oo))