Find the range of xxx such that ∣x2−5x+4∣<2|x^2 - 5x + 4| < 2∣x2−5x+4∣<2.
(1,4)(1, 4)(1,4)
(2,3)(2, 3)(2,3)
(1,4)∖{2,3}(1, 4) \setminus \{2, 3\}(1,4)∖{2,3}
(1,2)∪(3,4)(1, 2) \cup (3, 4)(1,2)∪(3,4)