One day, driving for some hundreds Km and for many hours, I let my mind going around the vast fields of knowledge and it came back with an interesting demonstration of a well known mathematical formula.
As you know the explicit formulas to solve the equations of any degree becomes immediately complex with the increasing of the equations degree and, more than that, it is possible to provide an explicit formula only for equations of 2°, 3° and 4° degree. This thing, and the difficulty of “deriving” them, have been creating in me some un-comfort since my days in high school.