Solve: x3−9x<0x^3 - 9x < 0x3−9x<0
(−∞,−3)∪(0,3)(-\infty, -3) \cup (0, 3)(−∞,−3)∪(0,3)
(−3,0)∪(3,∞)(-3, 0) \cup (3, \infty)(−3,0)∪(3,∞)
(−3,3)(-3, 3)(−3,3)
(−∞,0)∪(3,∞)(-\infty, 0) \cup (3, \infty)(−∞,0)∪(3,∞)