LinkBack URL
About LinkBacksprouve :
Originally Posted by dhiab
prouve :
Hi
If you consider the equationyou can find that x=1 is the only real solution since
Now if you try to solve it using Cardan method Méthode de Cardan - Wikipédia you will find that one real solution is
Since 1 is the only real solution you get![\sqrt[3]{3+\sqrt{9+\frac{125}{27}}}-\sqrt[3]{-3+\sqrt{9+\frac{125}{27}}} = 1](http://latex.codecogs.com/png.latex?\sqrt[3]{3+\sqrt{9+\frac{125}{27}}}-\sqrt[3]{-3+\sqrt{9+\frac{125}{27}}} = 1)
  |
