log10 4-log10 5+2log10 √125麻烦写出过程

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log104-log105+2log10√125麻烦写出过程log104-log105+2log10√125麻烦写出过程log104-log105+2log10√125麻烦写出过程log104-log

log10 4-log10 5+2log10 √125麻烦写出过程
log10 4-log10 5+2log10 √125
麻烦写出过程

log10 4-log10 5+2log10 √125麻烦写出过程
log10 4-log10 5+2log10 √125
=2log10 2 - log10 5 +log10 125
=2log10 2 +log10 25
=2log10 2 +2log10 5
=2

log10 4-log10 5+2log10 √125
=log[10](4/5*5√5)
=log[10](4√5)