log4(√5-√3)+log4(√5+√3)=?
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log4(√5-√3)+log4(√5+√3)=?log4(√5-√3)+log4(√5+√3)=?log4(√5-√3)+log4(√5+√3)=?log4(√5-√3)+log4(√5+√3)=l
log4(√5-√3)+log4(√5+√3)=?
log4(√5-√3)+log4(√5+√3)=?
log4(√5-√3)+log4(√5+√3)=?
log4(√5-√3)+log4(√5+√3)=log4[(√5-√3)(√5+√3)]=log4(2)=1/2
=log4(5-3)=log4(2)=1/2
求证:log4 3*log4 5
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