Quadratic Equation Solver

Solve any quadratic equation ax² + bx + c = 0. Enter the coefficients to see the discriminant, whether the roots are real or complex, and the full working using the quadratic formula.

Roots

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How it works

Discriminant D = b² - 4ac. Roots x = (-b ± √D) / 2a.

Frequently Asked Questions

What does the discriminant tell me?

If D > 0 there are two real roots, if D = 0 there is one repeated real root, and if D < 0 the roots are a complex conjugate pair.