1) (4^1/2)*16^(3/4)*16^(-3/4)*32^(-4/5)*2^3=
2) 27^(1/3)*81^(3/4)*(27/8)^(-1/3)*(2/3)^3=
3)64^(2/3):64^(1/2) =
4) 729^(1/2):729^(1/3)=