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