Alphabetical list of historical battles (see also Military history, List of battles):
NOTE: Where a year has been used to disambiguate battles it is the year when the battle started. In some cases these may still have gone on for several years.
... 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 is now a perfect ...