Exploration.
Enter the cubic equation.
Enter the solution for the cubic equation.
Use the Ferro-Tartaglia formula and verify that z it is a solution.
(c) 2006 John H. Mathews, Russell W. Howell
![[Graphics:../Images/ComplexNumberOrigin_gr_88.gif]](../Images/ComplexNumberOrigin_gr_88.gif)
![[Graphics:../Images/ComplexNumberOrigin_gr_89.gif]](../Images/ComplexNumberOrigin_gr_89.gif)
![[Graphics:../Images/ComplexNumberOrigin_gr_92.gif]](../Images/ComplexNumberOrigin_gr_92.gif)
and
verify that z it is a solution.![[Graphics:../Images/ComplexNumberOrigin_gr_93.gif]](../Images/ComplexNumberOrigin_gr_93.gif)
![[Graphics:../Images/ComplexNumberOrigin_gr_94.gif]](../Images/ComplexNumberOrigin_gr_94.gif)
![[Graphics:../Images/ComplexNumberOrigin_gr_95.gif]](../Images/ComplexNumberOrigin_gr_95.gif)
![[Graphics:../Images/ComplexNumberOrigin_gr_96.gif]](../Images/ComplexNumberOrigin_gr_96.gif)
![[Graphics:../Images/ComplexNumberOrigin_gr_90.gif]](../Images/ComplexNumberOrigin_gr_90.gif)
![[Graphics:../Images/ComplexNumberOrigin_gr_91.gif]](../Images/ComplexNumberOrigin_gr_91.gif){kind=small}