Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate the logarithmic expression without using a calculator. logb(xy3z8) log b ( x y 3 z 8 ) log bx + log by 3 - log bz 8 log bx + 3log by + 8log bz log bx + log by 3 + log bz 8 log bx + 3log by - 8log bz