How to use this calculator
Solve a quadratic equation using the quadratic formula, including real and complex root cases.
How the calculation works
- Enter a, b, and c.
- The discriminant b² - 4ac is calculated.
- Roots are selected based on the discriminant.
Formula
x = (-b ± sqrt(b² - 4ac)) / 2a.
Example
x² - 5x + 6 = 0 has roots x = 2 and x = 3.
Understanding your result
Use the output as a practical starting point, then review it before using it in an important workflow.
Assumptions and limitations
- a cannot be zero.
- Complex roots are displayed in a + bi form.
Frequently asked questions
Does this require an account?
No. The core tool works without creating a Tool2Do account.
Is my input included in share links or analytics?
No. Tool2Do share actions use the tool page URL and safe metadata, not private values or uploaded files.