a) [tex]0,6^3 * 5^3 = (0,6*5)^3 = 3^3 = 27[/tex]
b) [tex](\frac{2}{9})^4 : (\frac{4}{9})^4 = (\frac{2}{9} : \frac{4}{9})^4 = (\frac{2}{9} * \frac{9}{4})^4 = (\frac{2}{4})^4 = (\frac{1}{2})^4 = \frac{1}{16}[/tex]
c) [tex](\frac{5}{7})^5 * (2\frac{4}{5})^5 = (\frac{5}{4} * 2\frac{4}{5})^5 = (\frac{5}{4} * \frac{14}{5})^5 = 2^5 = 32[/tex]
d) [tex](-6,4)^6 : (-\frac{8^2}{10})^6 = ( -\frac{32}{5} : (- \frac{64}{10}))^6 = (-\frac{32}{5} * (-\frac{10}{64}))^6 = (\frac{2}{2})^6 = 1^6 = 1[/tex]
