Question

if 2 log (x-3)=log81 then find the value of x​

Answer 1

Answer:

$2log(x - 3) = log {9}^{2} \\ 2log(x - 3) = 2log9 (using \: property \: log {x}^{y} = ylogx) \\ log(x - 3) \: = log9 \\ x - 3 = 9 \\ x = 12$