x²MATH
Quadratic Equation Calculator
Solve a quadratic equation ax² + bx + c = 0 and calculate its discriminant.
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Formula
Discriminant = b² − 4ac; roots = (−b ± √discriminant) ÷ 2a.
Discriminant = b² − 4ac; roots = (−b ± √discriminant) ÷ 2a.
How it works
1
Enter a, b and c.
2
The calculator finds the discriminant.
3
Review the real or complex roots.
Important notes
When the discriminant is negative, the roots are complex.