Question 936567
Guessing your base is 4,


{{{-2*log(4,x)=log(4,9)}}}
{{{log(4,(x^(-2)))=log(4,9)}}}
The arguments are equal.
{{{x^(-2)=9}}}
{{{(1/x^2)=3^2}}}
{{{x^2=1/3^2}}}


{{{cross(x=-1/3)}}}  or {{{x=1/3}}}


No logarithm negative value.