Quadratic Equation Solver
The roots of a quadratic equation, real or complex, with the discriminant and the vertex of the parabola.
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How to do it
- 1Add the text
Paste or type the text or amount here.
- 2See the result
The result appears right away as you type.
- 3Copy it
Copy the result and use it anywhere. Your text goes nowhere.
About this tool
Enter the coefficients a, b and c of ax² + bx + c = 0. The solver finds both roots using the quadratic formula, tells you the discriminant and shows the vertex and axis of symmetry. If the discriminant is negative, the roots are shown as complex numbers.
Frequently asked questions
What is the discriminant?
b² − 4ac. If it is positive there are two real roots, if zero one repeated root, if negative two complex roots.
What if a is 0?
Then it is not a quadratic equation. It becomes a straight line, so a must not be zero.
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