[tex] \frac{1}{ \sqrt{2}+1 }[/tex] totul la patrat + [tex] \frac{1}{ \sqrt{2}-1 }
[/tex] totul la patrat
[tex] \frac{1^{2} }{2+4+1} + \frac{ 1^{2} }{2-4+1} = \frac{1}{7} - \frac{1}{1} = \frac{1}{7} - \frac{7}{7} = \frac{7-7}{7} = \frac{0}{7} =0[/tex]
p=0