2) $$ -6a^4c^5 \cdot 5c^2 a^6 = -6 \cdot 5 \cdot a^4 \cdot a^6 \cdot c^5 \cdot c^2 = -30 a^{4+6} c^{5+2} = -30a^{10}c^7$$
Ответ: $$-30a^{10}c^7$$
2) $$(-6m^3n^2)^3 = (-6)^3 (m^3)^3 (n^2)^3 = -216 m^{3 \cdot 3} n^{2 \cdot 3} = -216 m^9 n^6$$
Ответ: $$-216 m^9 n^6$$