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1441

Centuries: 14th century - 15th century - 16th century

Decades: 1390s 1400s 1410s 1420s 1430s - 1440s - 1450s 1460s 1470s 1480s 1490s

Years: 1436 1437 1438 1439 1440 - 1441 - 1442 1443 1444 1445 1446

Events

Revolt in Yucatan capital Mayapan; Mayan civilization falls into warring city-states

Births

Deaths

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Quadratic formula

... the common denominator is 4a2. We get <math>\left(x+\frac{b}{2a}\right)^2=\frac{-4ac+b^2}{4a^2}=\frac{b^2-4ac}{4a^2}.</math> Taking square roots of ...