Вычислите: 1,6^-2.

\[{1,6}^{- 2} = \left( \frac{16}{10} \right)^{- 2} = \left( \frac{10}{16} \right)^{2} =\]

\[= \left( \frac{5}{8} \right)^{2} = \frac{25}{64}\]