This tutorial could not be and is not a complete presentation of the theory of polynomial equations. Such a presentation would demand multiple time, space and effort.
Deliberately, a chapter referring to Horner's process was not included, because I considered that such a concept should be presented directly from a teacher and not with a computer aided tutorial. Besides it is a concept that is explained in almost all the books that refer to polynomial equations.
In this tutorial the effort was put in presenting
the theory of polynomial equations concentrated and not fragmentarily as
it is taught in schools and not in such a hard mathematical framework.
I hope this was achieved.