2. Вычислите: a) (1/3)⁻²; б) (7/8)⁻¹; в) 0,2⁻³; г) (-1 1/3)⁻³; д) (0,25²)⁻¹; e) (-1 1/5)⁻².

2. Вычислите:

а)
\[
\left(\frac{1}{3}\right)^{-2} = \left(\frac{3}{1}\right)^{2} = 3^2 = 9
\]

б)
\[
\left(\frac{7}{8}\right)^{-1} = \frac{8}{7}
\]

в)
\[
0.2^{-3} = \left(\frac{1}{5}\right)^{-3} = 5^3 = 125
\]

г)
\[
\left(-1\frac{1}{3}\right)^{-3} = \left(-\frac{4}{3}\right)^{-3} = \left(-\frac{3}{4}\right)^{3} = -\frac{27}{64}
\]

д)
\[
(0.25^2)^{-1} = ((\frac{1}{4})^2)^{-1} = (\frac{1}{16})^{-1} = 16
\]

е)
\[
\left(-1\frac{1}{5}\right)^{-2} = \left(-\frac{6}{5}\right)^{-2} = \left(-\frac{5}{6}\right)^{2} = \frac{25}{36}
\]