$$ \frac{8^6}{8^4} = 8^{6-4} = 8^2 = 64 $$
Ответ: 64
б)
$$ \frac{0.8^7}{0.8^4} = 0.8^{7-4} = 0.8^3 = 0.512 $$
Ответ: 0.512
в)
$$ \frac{(-0.3)^5}{(-0.3)^3} = (-0.3)^{5-3} = (-0.3)^2 = 0.09 $$
Ответ: 0.09
г)
$$ \frac{(1\frac{1}{2})^4}{(1\frac{1}{2})^2} = (1\frac{1}{2})^{4-2} = (1\frac{1}{2})^2 = (\frac{3}{2})^2 = \frac{9}{4} = 2\frac{1}{4} = 2.25 $$
Ответ: 2.25
д)
$$ \frac{(-2\frac{1}{3})^6}{(-2\frac{1}{3})^3} = (-2\frac{1}{3})^{6-3} = (-2\frac{1}{3})^3 = (-\frac{7}{3})^3 = -\frac{343}{27} = -12\frac{19}{27} $$
Ответ: $$-12\frac{19}{27}$$