Odpowiedź:
[tex]a)\ \ (1,5)^7:(1,5)^5=1,5^{7-5}=1,5^2=(\frac{15}{10})^2=(\frac{3}{2})^2=\frac{9}{4}=2 \frac{1}{4}\\\\b)\ \ (\frac{4}{3})^4*3^4=(\frac{4}{3}*3)^4=4^4=256\\\\c)\ \ (\frac{5}{7})^5*(1\frac{2}{5})^6=(\frac{5}{7})^5*(\frac{7}{5})^6=(\frac{5}{7})^5*(\frac{5}{7})^{-6}=(\frac{5}{7})^{5-6}=(\frac{5}{7})^{-1}=\frac{7}{5}=1\frac{2}{5}\\\\\\d)\ \ \dfrac{49^3*7^3}{7^8}=\dfrac{(7^2)^3*7^3}{7^8}=\dfrac{7^6*7^3}{7^8}=\dfrac{7^9}{7^8}=7^{9-8}=7^1=7[/tex]
