log3 72-3log3 2 怎么化简

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log372-3log32怎么化简log372-3log32怎么化简log372-3log32怎么化简log372-3log32=log372-log32³=log372-log38=log

log3 72-3log3 2 怎么化简
log3 72-3log3 2 怎么化简

log3 72-3log3 2 怎么化简
log3 72-3log3 2
=log3 72-log3 2³
=log3 72-log3 8
=log3 (72/8)
=log3 9
=log3 3²
=2log3 3
=2