SubArea: Quadratic equations and inequalitiesLevel: BProject ID: 2000000201Accepted: 0Clonable: 0Easy: 1Solve the following inequality. \[ x^2+1>0 \]\(x \in \mathbb{R}\)\(x \in \emptyset \)\(x \in (-1;1)\)\(x \in (-\infty ;-1)\cup (1;\infty )\)
