Răspuns:
[tex](-\frac{5}{4})^{-2} : (-\frac{5}{4})^{-6} * [(-\frac{5}{4})^{2} ]^{3} =\\\\(\frac{1}{(-\frac{5}{4})^{2}} : \frac{1}{(-\frac{5}{4})^{6}} * (-\frac{5}{4})^{2*3} =\\\\(\frac{1}{(-\frac{5}{4})^{2}} * \frac{(-\frac{5}{4})^{6}}{1} * (-\frac{5}{4})^{6}\\\\(-\frac{5}{4})^{4} *(-\frac{5}{4})^{6} =\\\\(-\frac{5}{4})^{4*6}=\\\\(-\frac{5}{4})^{24}=\\\\(\frac{5}{4})^{24}[/tex]
inversul numarului
[tex](\frac{5}{4})^{24} = (\frac{5}{4})^{-24}[/tex] [tex]= \frac{1}{(\frac{5}{4})^{24} }[/tex]
