Question

por favor me ajuda Obrigado

Answer 1

a resposta certa e:-34/39

Answer 2

           $\frac{ 2^{-3} +3^{-2} }{ 2^{-4} - 3^{-1} } \\ \\ = \frac{ \frac{1}{2^3} +\frac{1}{3^2} }{ \frac{1}{2^4} - \frac{1}{3} } \\ \\ = \frac{ \frac{1}{8}+ \frac{1}{9} }{ \frac{1}{16} - \frac{1}{3} } \\ \\ = \frac{ \frac{9+8}{72} }{ \frac{3-16}{48} } \\ \\ = \frac{17x48}{72x(-13)} \\ \\ = -\frac{34}{39}$

                                         ALTERNATIVA D)