## College Algebra (11th Edition)

$-3-i\sqrt{2}$
Original Problem: $\frac{-9-\sqrt{-18}}{3}$ Factor out $\sqrt{-1}$. $\frac{-9-\sqrt{-1}\times\sqrt{18}}{3}$ Factor out 3. Know that $\sqrt{-1}=i$. $\frac{-9-3i\sqrt{2}}{3}$ Divide each numerator term by 3. $-3-i\sqrt{2}$