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. The equation should be entered in its natural form.

Choose expression input type:

Expression input type:

Choose quadratic equation variable:

Equation variable

Квадратное уравнение

Quadratic equation you want to solve:

Other usefull links:

Linear equation online calculator
Short multiplication formulas