Practice problem
What is the set of solutions to the following quadratic inequality? x2+18<9xx^2 + 18 < 9xx2+18<9x
(−3,6)(-3, 6)(−3,6)
(3,6)(3, 6)(3,6)
(−∞,3)(-\infty, 3)(−∞,3)
(6,∞)(6, \infty)(6,∞)
(−∞,3)∪(6,∞)(-\infty, 3) \cup (6, \infty)(−∞,3)∪(6,∞)
(−6,−3)(-6, -3)(−6,−3)
Type a concept, like “slope” or “photosynthesis”.