Please explain Ferrari Method for solving Quartic Equation with 2 or 3 examples, thanks?

Question

if possible please specify each step during solution of examples

Answer 1

http://thesaurus.maths.org/mmkb/entry.html?action=entryById&id=3206

http://mathforum.org/library/drmath/view/51899.html

http://www-staff.mcs.uts.edu.au/~don/pubs/solving.html

http://thesaurus.maths.org/mmkb/entry.html?action=entryById&id=3206

Answer 2

Look at http://en.wikipedia.org/wiki/Quartic_equation; it will tell you everything and gives an example.
I had never used this method because it was cumbersome.