Cubic Equation Solver
Solve ax³ + bx² + cx + d = 0 — three real or one real and two complex roots.
Enter coefficients for
a·x³ + b·x² + c·x + d = 0, or load an example.About this tool
Cardano-Vieta closed form. Handles all real/complex cases automatically. Degenerates gracefully to quadratic or linear when a or b is zero.