Quadratic Equation Solver

Solve ax² + bx + c = 0 — find roots, discriminant, vertex, and more

Last reviewed: March 2026How we build & verify

a (x² coefficient)

b (x coefficient)

c (constant)

Roots

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Discriminant (b²-4ac)

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Nature of Roots

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Vertex

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Axis of Symmetry

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Y-Intercept

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Frequently Asked Questions

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We check Quadratic Equation Solver periodically to keep it working correctly and to make small improvements based on how people actually use it. The date at the top of the page shows the last review. Found a bug or have a suggestion? There's a feedback button in the bottom-right corner.