Применяем свойство степени \( (abc)^n = a^n b^n c^n \) и \( (a^m)^n = a^{mn} \).
\[ (0.5 a^3 b^5)^{-12} = (0.5)^{-12} \cdot (a^3)^{-12} \cdot (b^5)^{-12} = (0.5)^{-12} \cdot a^{3 \cdot (-12)} \cdot b^{5 \cdot (-12)} = (0.5)^{-12} \cdot a^{-36} \cdot b^{-60} \]