计算:___________.
计算:_______.
如果lg x=lg a+3lg b-5lg c,那么( )
A.x= B.x=
C.x=a+3b-5c D.x=a+b3-c3
化简:,得( )
A.2 B. C.-2 D.
3-27-lg 0.01+ln e3等于( )
A.14 B.0
C.1 D.6
已知log7[log3(log2x)]=0,那么=________.