Find the set of all real numbers xxx that satisfy the inequality x4−13x2+36x2−1≤0\frac{x^4 - 13x^2 + 36}{x^2 - 1} \leq 0x2−1x4−13x2+36≤0.
x∈[−3,−2]∪(−1,1)∪[2,3]x \in [-3, -2] \cup (-1, 1) \cup [2, 3]x∈[−3,−2]∪(−1,1)∪[2,3]
x∈[−3,−2]∪[−1,1]∪[2,3]x \in [-3, -2] \cup [-1, 1] \cup [2, 3]x∈[−3,−2]∪[−1,1]∪[2,3]
x∈(−3,−2]∪(−1,1)∪[2,3]x \in (-3, -2] \cup (-1, 1) \cup [2, 3]x∈(−3,−2]∪(−1,1)∪[2,3]
x∈(−∞,−3]∪[−2,−1)∪(1,2]∪[3,∞)x \in (-\infty, -3] \cup [-2, -1) \cup (1, 2] \cup [3, \infty)x∈(−∞,−3]∪[−2,−1)∪(1,2]∪[3,∞)