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Log3 9x^4 - log 3 (3x)^2

User Podshumok
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remember
loga-logb=log(a/b)
log_3(9x^4)-log_3(3x)^2= log_3(9x^4)/((3x)^2) =log_3( (9x^4)/(9x^2))=log_3(x^2)=2log_3(x )


User TunaMaxx
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