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Hilaire Rouelle

Hilaire Marin Rouelle (born 1718, died 1779) was a French chemist. In 1773, he discovered urea.



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Quadratic formula

... are complex conjugates of each other. (In this case, the parabola does not intersect the x-axis at all.) Note that when computing roots numerically, the usual form ...

 
 
 
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