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Mathematics 16 Online
OpenStudy (anonymous):

simplify log4 81^-2 help me please

OpenStudy (anonymous):

are you sure its log base 4 ?

OpenStudy (anonymous):

I think its possibly 3

OpenStudy (anonymous):

if it is \[log_3(81^{-2})\] then you get \[-2log_3(81)\] and since \[3^4=81\] you know \[log_3(81)=4\] so your answer will be \[-2\times 4=-8\]

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