Decades: 1240s 1250s 1260s 1270s 1280s - 1290s - 1300s 1310s 1320s 1330s 1340s
Years: 1291 1292 1293 1294 1295 - 1296 - 1297 1298 1299 1300 1301
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... roots numerically, the usual form of the quadratic formula is not ideal. See Loss of significance for details. Derivation The quadratic formula is derived by ...