±Free
Real quadratic solver
Solve ax² + bx + c = 0 and report real roots; supports the linear case.
Enter the coefficients of ax² + bx + c = 0. The tool computes b² − 4ac and returns sorted real roots, using a numerically stable form when there are two roots; when a is zero it solves bx + c = 0.
How to use
- Enter your text, values, or image.
- Adjust the options and run the tool.
- Copy or download your result.
Worked example
Example input
a: 1 b: -3 c: 2
Example result
{
"roots": [
1,
2
],
"discriminant": 1
}Limitations and details
Complex roots are not returned, and equations with no unique linear solution produce an error.
Inputs and options
- a
- Number
- b
- Number
- c
- Number
Frequently asked questions
Is this tool free and private?
Yes. All 300 tools are free in this phase. Processing happens in your browser; your input and files are not sent to our servers.