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1255

Centuries: 12th century - 13th century - 14th century

Decades: 1200s 1210s 1220s 1230s 1240s - 1250s - 1260s 1270s 1280s 1290s 1300s

Years: 1250 1251 1252 1253 1254 - 1255 - 1256 1257 1258 1259 1260

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Quadratic formula

... equation is now in a form in which we can conveniently complete the square[?]. To "complete the square" is to add a constant (i.e., in ...

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