Solution of cubic equations: An alternative method

Abstract

The exact solution of polynomial equations has long been an area of interest. Students are familiar with the solution of linear and quadratic equations, but when they move to cubic and quartic equations, they find that the solution involves a non-intuitive transformation. Cardan’s method of solving the cubic equation is well known (see [1] and [2]; see also [3] for a geometrical interpretation of the method). This article suggests a different and simpler formulation to solve cubic equations.