Decades: 1270s 1280s 1290s 1300s 1310s - 1320s - 1330s 1340s 1350s 1360s 1370s
Years: 1323 1324 1325 1326 1327 - 1328 - 1329 1330 1331 1332 1333
Births
Marriages
Deaths
... 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 b/(2a) to both sides, ...