Rucphen (population: 22,607) is a town in the southern Netherlands, in the province of North Brabant. The municipality covers an area of 64.23 km² (of which 0.70 km² water).
The municipality of Rucphen also includes the following towns, villages and townships: Schijf[?], Sprundel, St. Willebrord[?], Zegge[?].
... of "=", that will make 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 ...