Quadratic Equation Solver
Solve ax² + bx + c = 0. Shows discriminant, real or complex roots, and full working via the quadratic formula.
100% client-side · no upload
x²
+ x
+ Discriminant (Δ = b² − 4ac)
Roots
Working (quadratic formula)
How to use
- Enter the coefficients a, b, and c for your quadratic equation ax² + bx + c = 0.
- Click Solve. The discriminant (Δ = b² − 4ac) determines the nature of roots.
- If Δ > 0: two distinct real roots. If Δ = 0: one repeated root. If Δ < 0: two complex conjugate roots.
Related math tools
- Scientific Calculator — trig, log, and power functions
- Fraction Calculator — work with fractional coefficients
- Matrix Calculator — solve systems with matrices
Preguntas frecuentes
- Is this quadratic solver free?
- Yes, completely free with no signup and no usage limits.
- Does my data leave my device?
- No. All calculations happen locally in your browser with JavaScript.
- Does it work on mobile?
- Yes. Works on iPhone Safari and Android Chrome without installing any app.