4(logax)²+(logbx)²-5logax logbx=0
(4logax-logbx)(logax-logbx)=0
4logax=logbx,logax=logbx
4lgx/lga=lgx/lgb,a=b
lgx/lga=lgx/4lgb,a=b
lgx/lga=lgx/lgb^4,a=b
a=b^4或a=
4(logax)²+(logbx)²-5logax logbx=0
(4logax-logbx)(logax-logbx)=0
4logax=logbx,logax=logbx
4lgx/lga=lgx/lgb,a=b
lgx/lga=lgx/4lgb,a=b
lgx/lga=lgx/lgb^4,a=b
a=b^4或a=