# Cubic Equation

## Cubic Equation

To graphically analyze a cubic equation ( f(x) = ax³ + bx² + cx + d ) in a Cartesian coordinate system, a cubic parabola is used. The number x, which turns the equation into an identity, is called the root or solution of the equation. It is also the root of the third-degree polynomial on the left side of the canonical notation. According to the basic theorem of algebra, over a field of complex numbers, the cubic equation always has 3 roots (consider multiplicity). This calculator will help you to solve the third-degree equation(cubic equation), using the Cardano formula, the discriminant, Multiple roots, Δ = 0, etc.

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