Cubic Equation
A cubic equation is an equation involving a cubic polynomial, i.e., one of the form
Since 
(or else the polynomial would be quadratic and not cubic), this can without loss
of generality be divided through by 
, giving
A closed-form formula known as the cubic formula exists for the solutions of a cubic equation.
See also
Casus Irreducibilis, Cubic Formula, Cubic Polynomial
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Cite this as:
Weisstein, Eric W. "Cubic Equation." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/CubicEquation.html