\[\boxed{\mathbf{2.2}\mathbf{71}}\]
Пояснение.
Решение.
\[\textbf{а)}\ \left( \frac{1}{4} \right)^{2} = \frac{1}{4} \cdot \frac{1}{4} = \frac{1}{4 \cdot 4} = \frac{1}{16}\ \]
\[\textbf{б)}\ \left( \frac{3}{5} \right)^{3} = \frac{3}{5} \cdot \frac{3}{5} \cdot \frac{3}{5} = \frac{3 \cdot 3 \cdot 3}{5 \cdot 5 \cdot 5} =\]
\[= \frac{27}{125}\]
\[\textbf{в)}\ \left( \frac{9}{11} \right)^{2} = \frac{9}{11} \cdot \frac{9}{11} = \frac{9 \cdot 9}{11 \cdot 11} =\]
\[= \frac{81}{121}\ \]
\[\textbf{г)}\ \left( \frac{5}{6} \right)^{3} = \frac{5}{6} \cdot \frac{5}{6} \cdot \frac{5}{6} = \frac{5 \cdot 5 \cdot 5}{6 \cdot 6 \cdot 6} =\]
\[= \frac{125}{216}\]