(0.0081)^-1/4-[3*(7/8)^0]-1*[81^-0.25+(3*3/8)^-1/3]^-1/2

问题描述:

(0.0081)^-1/4-[3*(7/8)^0]-1*[81^-0.25+(3*3/8)^-1/3]^-1/2

0.3^4*(-1/4)-3-[(3^4*(-1/4)+(3/2)^3*(-1/3)]^-1/2=10/3-3-[1/3+2/3]^(-1/2)=1/3-1=-2/3