Encyclopedia > 18th century BC

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18th century BC

(19th century BC - 18th century BC - 17th century BC - other centuries)

(3rd millennium BC - 2nd millennium BC - 1st millennium BC)


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Significant persons:

Inventions, Discoveries, Introductions:



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Quadratic formula

... quadratic equation by a, we have <math> x^2 + \left( \frac{b}{a} \right) x + \frac{c}{a}=0 </math> which is equivalen ...

 
 
 
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