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Quadratic Equation Solver

Solve ax² + bx + c = 0 and report real or complex roots.

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Quadratic formula calculator online

Inspect roots of a quadratic equation. Review coefficient order and floating-point precision, especially near repeated roots.

How to use it

Enter Coefficient a or select Try example. Review Coefficient b, Coefficient c. Select Calculate and inspect the result before copying or downloading.

Options and example settings

Option	Choices / value	Example default
Coefficient b	Enter a value	-3
Coefficient c	Enter a value	2

Worked examples

Inspect roots of a quadratic equation.

Worked example — Quadratic Equation Solver

Settings: Coefficient b: -3; Coefficient c: 2

Input:

Output:

Root 1: 2
Root 2: 1
Discriminant: 1

The example output has 3 lines. Compare its order, separators and whitespace with the input before copying the result.

Limitations and common mistakes

Review coefficient order and floating-point precision, especially near repeated roots.

Frequently asked questions

How can I solve a quadratic equation online?

Enter Coefficient a or select Try example. Review Coefficient b, Coefficient c. Select Calculate and inspect the result before copying or downloading.

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.