How to Use Quadratic Equation Solver
Solve any quadratic ax²+bx+c=0 for real or complex roots, with the discriminant.
Open the Quadratic Equation Solver tool →What is Quadratic Equation Solver?
Solve any quadratic ax²+bx+c=0 for real or complex roots, with the discriminant. It's completely free, needs no sign-up, and runs entirely in your browser — so it's fast and private.
How to use Quadratic Equation Solver
- Open the Quadratic Equation Solver tool.
- Enter your details or values.
- The result is calculated instantly.
- Copy or use the result. Everything runs in your browser — nothing is uploaded.
Frequently asked questions
How does it solve the equation?
It uses the quadratic formula x = (−b ± √(b²−4ac)) / 2a and shows the discriminant, giving two real, one repeated, or two complex roots.
What does the discriminant tell me?
Δ = b²−4ac. If Δ > 0 there are two real roots, if Δ = 0 one repeated real root, and if Δ < 0 two complex roots.
Ready to try it?
Open Quadratic Equation Solver →