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1545

Centuries: 15th century - 16th century - 17th century

Decades: 1490s 1500s 1510s 1520s 1530s - 1540s - 1550s 1560s 1570s 1580s 1590s

Years: 1540 1541 1542 1543 1544 - 1545 - 1546 1547 1548 1549 1550

Events

December 13 - Official opening of the Council of Trent (closed 1563)

Births

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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 ...