What is this calculator?
Solve ax² + bx + c = 0, including complex roots.
What can you use it for?
Use it when solving an exercise, checking a result, or working with the particular quantities shown in this form. Solve ax² + bx + c = 0, including complex roots.
How to use it
- Enter coefficient a.
- Enter coefficient b.
- Enter coefficient c.
- Select Calculate (or Generate for random tools).
- Read the answer and any additional results below the form. Check the units and the limits of the method.
Formula and method
A negative discriminant returns complex roots. The leading coefficient must be nonzero.
Worked example
Coefficient a: 1, Coefficient b: -3, Coefficient c: 2. The result is 2, 1 (real roots).
Assumptions and limits
Inputs and outputs must stay within the supported finite number range. Displayed decimal answers may be rounded.
Frequently asked questions
What inputs does the Quadratic Formula Calculator need?
Use coefficient a, coefficient b, coefficient c. Read the answer and any additional results below the form. Check the units and the limits of the method.
What assumptions apply to the Quadratic Formula Calculator?
Inputs and outputs must stay within the supported finite number range. Displayed decimal answers may be rounded.