Выполните действия: mn/p^2:(2mn/p)^2.

\[\frac{\text{mn}}{p^{2}}\ :\left( \frac{2mn}{p} \right)^{2} =\]

\[= \frac{\text{mn}}{p^{2}} \cdot \frac{p^{2}}{4m^{2}n^{2}} = \frac{1}{4mn}.\]