SubArea: Higher degree equations and inequalitiesLevel: BProject ID: 1003029006Source Problem: 2010009604Accepted: 1Clonable: 1Easy: 1Find the solution set of the inequality. (x4+1)(x2+4)<0∅(−∞;−2)∪(2;∞)(−2;−1)∪(1;2)(−1;1)
