## anonymous 5 years ago simplify log4 81^-2 help me please

1. anonymous

are you sure its log base 4 ?

2. anonymous

I think its possibly 3

3. 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 $-2\times 4=-8$