At last I finish the page, claim this ebook :
Thesis – Cubic or Higher Power Equation Factoring
at http://www.comelych.com/ebook/freeebook.php
Although proved by a mathematician a few hundred years ago which cubic or higher equation is impossible to be factorised, I discovered a method of factoring, which not only apply to equation with integer and fraction factors, but also apply to equation with factors that is decimal number.