[tex](\frac{3}{4})^{-4}+(\frac{9}{5})^{-2}=[/tex]
[tex](\frac{4}{3})^4+(\frac{5}{9})^2=[/tex]
[tex]\frac{256}{81} +\frac{25}{81}=[/tex]
[tex]\frac{281}{81}[/tex]
Gabarito: d)
