Decades: 1240s 1250s 1260s 1270s 1280s - 1290s - 1300s 1310s 1320s 1330s 1340s
Years: 1290 1291 1292 1293 1294 - 1295 - 1296 1297 1298 1299 1300
Births
Deaths
... of (x + b/(2a)). The right side can be written as a single fraction; the common denominator is 4a2. W ...