log2 5*log5 81*log3 4+ln根号e

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log25*log581*log34+ln根号elog25*log581*log34+ln根号elog25*log581*log34+ln根号e=log25*log581*log34+ln√e=log

log2 5*log5 81*log3 4+ln根号e
log2 5*log5 81*log3 4+ln根号e

log2 5*log5 81*log3 4+ln根号e
=log2 5*log5 81*log3 4+ln√e =log(2)5x 4log(5)3x2log(3)2+1/2lne =8[log(3)5/log(3)2] xlog(5)3xlog(3)2+1/2 =8log(3)5xlog(5)3+1/2 =8+1/2 =8,5.