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442

Centuries: 4th century - 5th century - 6th century

Decades: 390s 400s 410s 420s 430s - 440s - 450s 460s 470s 480s 490s

Years: 437 438 439 440 441 - 442 - 443 444 445 446 447


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Quadratic formula

... 2. (In a field of characteristic 2, the element 2a is zero and it is impossible to divide by it.) The symbol <math>\pm \sqrt {b^2-4ac}</math> in the ...

 
 
 
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