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Solve for x x^2+1=0 | Mathway
x^2+1=0 - Wolfram|Alpha
x^2+1=0 - Symbolab
Solve x^2+1=0 | Microsoft Math Solver
Quadratic formula explained (article) | Khan Academy
Graph x^2+1=0 | Mathway
Solve x^2+x+1=0 | Microsoft Math Solver
Microsoft Math Solver - Math Problem Solver & Calculator
Desmos | Graphing Calculator
Step-by-Step Solutions - Wolfram|Alpha