Question 1095569
Is the base of log, 4 ?


{{{log(4,x)+log(4,(x-3))=1}}}


{{{log(4,(x(x-3)))=1}}}


{{{4^1=x(x-3)}}}


{{{x^2-3x-4=0}}}, and you can take the rest from here.
You want the logarithms of non-negative numbers.