81^0.75 = 81^(3/4) = (3^4)^(3/4) = 3^3 = 27
32^-0.4 = 1/(32^0.4) = 1/(2^(5*0.4)) = 1/(2^2) = 1/4
8^(-2/3) 27^(1/3) = (2^3)^(-2/3) (3^3)^(1/3) = 2^(-2) 3 = 1/4 3 = 3/4
256^0.5 = √256 = 16
81^0.75 = 81^(3/4) = (3^4)^(3/4) = 3^3 = 27
32^-0.4 = 1/(32^0.4) = 1/(2^(5*0.4)) = 1/(2^2) = 1/4
8^(-2/3) 27^(1/3) = (2^3)^(-2/3) (3^3)^(1/3) = 2^(-2) 3 = 1/4 3 = 3/4
256^0.5 = √256 = 16