............Вычислите:
a) 6^(-4) / ( 6^(-3 / 5) * 6^(1 / 5) )^5 = 6^(-4) / 6^(-3) * 6 = 6^3 / 6^5 = 1 / 6^2 = 1 / 12;
b) (√∛25)³ = (^6√25)³ = ^6√(25³) = √25 = 5.