Ripoll is the capital of the comarca of Ripollès[?],
in the province of Girona, Catalonia, Spain,
located at 691 metres above the sea, on the confluence of the river Ter and its tributary Freser[?], by the Pyrenees near the French border.
Population 10,908 (1996).
... the formula should be understood as "either of those element(s) of the field whose square equals b2 - 4ac". In some fields, some elements have no square roots ...