Решение:
a) $$(ab)^5 = a^5b^5$$
б) $$(3cd)^2 = 3^2c^2d^2 = 9c^2d^2$$
в) $$(-5m)^3 = (-5)^3m^3 = -125m^3$$
г) $$(-10mn)^4 = (-10)^4m^4n^4 = 10000m^4n^4$$