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Free Quadratic Equation Solver

This free quadratic equation solver runs entirely in your browser — no signup and no file uploads. Solve ax² + bx + c = 0 for real or complex roots using the quadratic formula.

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Inputs

Results

Discriminant
1
Root 1
2
Root 2
1

How to use this free tool

  1. Enter coefficients a, b, and c.
  2. Solve the equation.
  3. Read the roots.
  4. Verify by substitution if needed.

Formula

x = (−b ± √(b² − 4ac)) / (2a)

Examples

  • Simple roots

    Input: x² − 5x + 6 = 0

    Output: x = 2, x = 3

Related searches

People looking for a quadratic equation solver often also search for quadratic formula calculator, solve quadratic, roots of quadratic, ax2+bx+c, quadratic formula, and roots calculator. This page covers that search cluster without duplicate URLs.

FAQ

What if the discriminant is negative?

Roots are complex; the tool reports them when supported.

Must a be non-zero?

Yes—otherwise it is not a quadratic equation.

Does it show steps?

Results focus on roots; apply the formula for hand checks.

How do I use a free quadratic equation solver?

This free quadratic equation solver runs entirely in your browser — no signup and no file uploads. Use the free tool above for instant results — no signup, browser-based, and private.

What is a quadratic equation solver?

This free quadratic equation solver runs entirely in your browser — no signup and no file uploads. Use the free tool above for instant results — no signup, browser-based, and private.

Is there a free online calculator for quadratic equation solver?

This free quadratic equation solver runs entirely in your browser — no signup and no file uploads. Use the free tool above for instant results — no signup, browser-based, and private.

How does the quadratic equation solver work?

This free quadratic equation solver runs entirely in your browser — no signup and no file uploads. Use the free tool above for instant results — no signup, browser-based, and private.

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