Question

5.CALCULE AS EXPRESSÕES NUMÉRICAS.
me ajudem por favor!!! por favor!!!​

Answer 1

Resposta:

$\frac{-71}{9}$

Explicação passo a passo:

$(\frac{3}{5})^{-2} * (\frac{5}{2})^{-1} - (\frac{4}{3})^{-2} * (\frac{1}{4})^{-2}= \\\\(\frac{3}{5})^{-1*2} * (\frac{5}{2})^{-1} - (\frac{4}{3})^{-1*2} * (\frac{1}{4})^{-1*2}=\\\\(\frac{5}{3})^{2} * (\frac{2}{5}) - (\frac{3}{4})^{2} * (\frac{4}{1})^{2}=\\\\(\frac{25}{9}) * (\frac{2}{5}) - (\frac{9}{16}) * (\frac{16}{1}) =\\\\(\frac{50}{45}) - (\frac{9*16}{16}) =\\\\(\frac{10}{9}) - (9) =\\\\\frac{-81+10}{9} = \frac{-71}{9}$