The Dutch Football League is organized by the Koninklijke Nederlandse Voetbal Bond[?] (KNVB, Royal Dutch Football Association). There are two divisions for professional teams in the Netherlands: a premier division (eredivisie) and a first division (eerste divisie). Previously, a second division was also in existence, but it was discontinued after the 1970/1971 season.
... computing roots numerically, the usual form of the quadratic formula is not ideal. See Loss of significance for details.
Derivation
The quadratic formula is derived by ...