This page contains a routine that solves a Cubic Equation. It is written in JavaScript, so make sure that JavaScript is enabled in your browser.
Once the problem is arranged into the following form (a, b, c, and d are known constants), the equation can be solved for values of x that satisfy the equation.
a x 3 + b x 2 + c x + d = 0
Since the equation is a third degree equation (the equation's highest power is three), there will be three solutions, output as x1, x2, and x3.
Input the values for a, b, c, and d below, and then click the "Calculate Solutions" button to have the results calculated.
NOTE: The solutions may include a non-zero imaginary component, as indicated by the "i" field.