(−∞,12)∪(32,+∞) \left(-\infty, \frac{1}{2}\right) \cup\left(\frac{3}{2},+\infty\right)(−∞,21)∪(23,+∞)
(12,32) \left(\frac{1}{2}, \frac{3}{2}\right)(21,23)
(−∞,1)∪(3,+∞) (-\infty, 1) \cup(3,+\infty)(−∞,1)∪(3,+∞)
(−∞,2)∪(52+∞)(-\infty, 2) \cup\left(\frac{5}{2}+\infty\right)(−∞,2)∪(25+∞)