The City of Westminster is a London borough and a city in its own right, situated to the west of the City of London and north of the River Thames. It was extended in 1965 to include the former Metropolitan Boroughs of St. Marylebone and Paddington in the north. The city contains most of London's West End.
... left side is now a perfect square; it is the square of (x + b/(2a)). The right side can be written as a single fraction; the common denominator is 4a2. We ...