# Solve quadratic equation online

*Quadratic equation* is equation of the form:

a∙x
^{
2
} +
b∙x +
c =
0

On the basis of this calculator is discriminant approach. However, is special cases (then one or more coefficients are equal to zero) more simple approach is used. So, this calculator tests input equation and choose the most simple solution. Step by step solution available for free.

Numbers, fractions and parameters can be entered as coefficients. The leading coefficient can't be zero. In other cases then coefficient is absent, enter 0. To enter negative coefficients use minus sign, for example -45. At the present calculator doesn't support decimal numbers as inputs.

^{2} +