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.
... complete the square[?]. To "complete the square" is to add a constant (i.e., in this case, a quantity that does not depend on x) to the expression to the left of "=", ...