## College Algebra 7th Edition

$2\log x+\log y-\log z$
We can expand $\log(\frac{x^{2}y}{z})$ to get: $\log(\frac{x^{2}y}{z})=\log(x^{2}y)-\log z=\log x^{2}+\log y-\log z=2\log x+\log y-\log z$