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22nd century BC

(23rd century BC - 22nd century BC - 21st century BC - other centuries)

(4th millennium BC - 3rd millennium BC - 2nd millennium BC)


Events:

Significant persons:

Inventions, Discoveries, Introductions:



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Quadratic formula

... cases: If the discriminant is zero, then there is a repeated solution x, and this solution is real. (Geometrically, this means that the parabola described by the ...

 
 
 
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