[tex]\sqrt{\frac{55}{\frac{6*9+1}{9} } } +\sqrt{\frac{56}{\frac{6*9+2}{9} } } +...+\sqrt{\frac{62}{\frac{6*9+8}{9} } }[/tex]=
[tex]\sqrt{55*\frac{9}{55} } +\sqrt{56*\frac{9}{56} }+...+\sqrt{62*\frac{9}{62} } =[/tex]
[tex]\sqrt{9}+\sqrt{9}+\sqrt{9} +...+\sqrt{9} =3*8=24[/tex]
sper ca te am ajutat
