Uses the quadratic formula x = (−b ± √(b² − 4ac)) / 2a. A negative discriminant gives complex roots.
Questions
What does the discriminant tell me?
Positive: two real roots. Zero: one repeated root. Negative: two complex roots.
Quadratic Equation Solver
Solve ax² + bx + c = 0 with real or complex roots, and see the discriminant and vertex.