Question$-\frac{24}{\sqrt{72}}, \quad \frac{-21}{\sqrt{63}}, \quad \frac{42}{\sqrt{126}}, \quad \frac{52}{4 \sqrt{52}}, \quad \frac{48}{4 \sqrt{96}}, \quad \frac{18}{\sqrt{72}}, \quad \frac{50}{\sqrt{150}}, \quad \frac{-80}{\sqrt{240}}$
Rationalize the denominators of the fractions listed above.