Question

logaritmos ajuda por favor!!

24016bac5aedb470f041f4c33a6b1cbf.docx

Answer 1

$log \frac{1}{9} _{9 \sqrt{81} } \\ (9 \sqrt{81})^x= \frac{1}{9} \\ (9*9)^x= 9^{-1} \\ (81)^x =9^{-1} \\ (9^2)^x =9^{-1} \\ 9^{2x }=9^{-1} \\ 2x=-1 \\ x=- \frac{1}{2}$