=4 *(根号3/2)^1/2**(3根号3/2)^1/2+(log5 (1/5)/log5 2)*(log5 (1/8)/log5 3)*(log5 1/9)=4 *(根号3/2* 3根号3/2)^1/2 + (-1)/(log5 2)*(-3log5 2)/(log5 3)*(-2log5 3) (抵消抵消抵消)=4 *(9/4)^(1/2) + (-1)*...