The London Borough of Hackney is a London borough in the northeast of inner London. It is one of the poorest boroughs but home to numerous clubs and centre of the London arts scene[?].
... b/(2a), so we add the square of b/(2a) to both sides, getting
<math>x^2+\frac{b}{a}x+\frac{b^2}{4a^2}=-\frac{c}{a}+\frac{b^2}{4a^2}.</math>
The left side ...