Decades: 1270s 1280s 1290s 1300s 1310s - 1320s - 1330s 1340s 1350s 1360s 1370s
Years: 1321 1322 1323 1324 1325 - 1326 - 1327 1328 1329 1330 1331
Births
Deaths
... square roots of both sides yields <math>x+\frac{b}{2a}=\frac{\pm\sqrt{b^2-4ac}}{2a}.</math> Subtracting b/(2a) from both sides, w ...