Solve the equation LaTeX:  \displaystyle \log_{8}(x + 32785)-\log_{8}(x + 81)=3 .

Using the quotient property of logarithms gives LaTeX:  \displaystyle \log_{8}\frac{x + 32785}{x + 81} = 3 . Making both sides of the equation exponents on the base LaTeX:  \displaystyle 8 gives LaTeX:  \displaystyle \frac{x + 32785}{x + 81}=512 . Clearing the fractions by multiplying by the LCD gives LaTeX:  \displaystyle x + 32785=512 x + 41472 . Isolating LaTeX:  \displaystyle x gives LaTeX:  \displaystyle x = -17 .