Decades: 1270s 1280s 1290s 1300s 1310s - 1320s - 1330s 1340s 1350s 1360s 1370s
Years: 1319 1320 1321 1322 1323 - 1324 - 1325 1326 1327 1328 1329
Births
Deaths
... does not depend on x) to the expression to the left of "=", that will make it a perfect square trinomial of the form x2 + 2xy + y2. Since "2xy" in this case is (b/a)x, ...