\[- 12p^{7}\sqrt{\frac{25}{p^{10}}};где\ p < 0.\]
\[- 12p^{7}\sqrt{\frac{25}{p^{10}}} = - 12p^{7} \cdot \frac{5}{\left| p^{5} \right|} = \frac{- 12p^{7} \cdot 5}{- p^{5}} =\]
\[= 60p^{2}\]