SubArea: Higher degree equations and inequalitiesLevel: BProject ID: 2000003604Accepted: 0Clonable: 0Easy: 1Find the solution set of the inequality. \[ (x^2-1)(x^2+1)>0 \]\( (-\infty;-1) \cup (1;\infty) \)\( (-1;1)\)\( (1;\infty) \)\( (-1;\infty) \)
