Solving cubic equations

Quite often, to solve a particular mathematical problem, one has to formulate and solve an equation. Of course, quadratic equations are the most popular among schoolchildren, but quite often high school students also have to solve cubic equations.

A cubic equation is a third-order equation, typically of the form ax3 + bx2 + cx + d = 0, where the value «a» cannot be zero. In such equations, the value «x» is called the root of the cubic equation. Generally, cubic equations have three roots, which can be complex or real.
With our online calculator, you can find the roots of cubic equations; all you need to do is enter the values into the provided form. Our calculator solves using the Vieta Cardano method.


a x 3   +   b x 2   +   c x   +  d   =   0   

      a =

      b =

      c =

      d =