f) va rog muuuult (stiu ca nu e ora potrivita sa intreb din astea) (e 22:20) :(((

Răspuns:
[tex](\frac{2}{13} )^{4*5} :(\frac{2}{13} )^{3*6} =\\\\(\frac{2}{13}) ^{20} :(\frac{2}{13})^{18} =\\\\(\frac{2}{13} )^{20-18} =\\\\(\frac{2}{13} )^2=\frac{4}{169}[/tex]