2 | 2 | / 2 \ | 2 | |x - 3*x + 1| - 1 < \x - 3*x/ + 2*|x - 3*x|
|x^2 - 3*x + 1| - 1 < (x^2 - 3*x)^2 + 2*|x^2 - 3*x|
(-oo, 0) U (0, 3) U (3, oo)
x in Union(Interval.open(-oo, 0), Interval.open(0, 3), Interval.open(3, oo))
Or(And(-oo < x, x < 0), And(0 < x, x < 3), And(3 < x, x < oo))
((-oo < x)∧(x < 0))∨((0 < x)∧(x < 3))∨((3 < x)∧(x < oo))