SubArea: Higher degree equations and inequalitiesLevel: BProject ID: 1003029004Source Problem: 2010009603Accepted: 1Clonable: 1Find the solution set of the inequality. \[ x^4-1\geq0 \]\( (-\infty;-1]\cup[1;\infty) \)\( [-1;1] \)\( \mathbb{R} \)\( [ 1;\infty ) \)
