Redirected from Cote d'Or
Préfecture (capital): Dijon.
Sous-préfectures: Beaune[?] and Montbard[?].
See also: Communes of the Côte-d'Or département
... it a perfect square trinomial of the form x2 + 2xy + y2. Since "2xy" in this case is (b/a)x, we must have y = b/(2a), so we add the square of b/(2a) to both sides, ...