About the Cubic Equation Solver
All three roots of any cubic, real or complex, with full working.
What it is
The Cubic Equation Solver finds all three roots of axยณ + bxยฒ + cx + d = 0 using Cardano's classical formula. It depresses the cubic to remove the squared term, computes the discriminant to classify the roots, then applies the appropriate real or complex root formula โ showing every step of the derivation.
Features
Cardano's formula
The classical depression-and-substitution method shown step by step.
Discriminant classification
Automatically identifies three real roots, a repeated root, or a complex pair.
Complex root display
Complex roots shown in standard a ยฑ bi form.
Graph
The cubic curve plotted with real roots marked at the x-axis crossings.