1) $$-6a^4b^5 \cdot 5b^2a^6 = -6 \cdot 5 \cdot a^4 \cdot a^6 \cdot b^5 \cdot b^2 = -30a^{4+6}b^{5+2} = -30a^{10}b^7$$
2) $$(-6m^3n^2)^3 = (-6)^3 \cdot (m^3)^3 \cdot (n^2)^3 = -216m^{3\cdot 3}n^{2 \cdot 3} = -216m^9n^6$$
Ответ: 1) $$-30a^{10}b^7$$; 2) $$-216m^9n^6$$