SubArea: Quadratic equations with complex rootsLevel: AProject ID: 2000001501Accepted: 0Clonable: 0Easy: 1Solve the quadratic equation \( x^2 +1 =0\) in the set of complex numbers.\( x_{1,2} = \pm i\)\( x_{1,2} = i\)\( x_{1,2} = -i\)\( x_{1,2} = \pm 1\)
