解log(2/3) (1/20)=?

计算：1/[log(2)3]+1/[log(5)3]=? log(2)(25)×log(3)(1/16)×log(5)(1/9)=? 化简2log`5(10)+log`3(0.25）+log`1/5(125)= 已知log(1/7)[log(3)(log(2)x)]=0 log(9)x+log(x^2)3=1的解为? log(3)4*log(4)8*log(8)M =log(2)16 M是多少 解方程[log(a)(x-1)]-[log(a)(2x-3)]=log(a)(1/3-x),(a＞0,且a≠1). [log(3)3^1/2]^2+log(0.25)1/4+9log5根号5-log（根号3）1=? 2log底3x+log底3 2=1/2log底3 16 x为什么值 1/log（2）x+1/log（3）x+1/log（4）x=1,x=? log底数7[log底数3（log底数2X）]=0,那么x^1/2的值是 log(2x)+log(3y)-log(2z) 怎么化简? log3(x^2-2x-6)=2 log(3x+6)=1+l