Rationalizing quotients I have 
$$\frac{\sqrt{10}}{\sqrt{5} - 2}$$
I have no idea what to do, I know that I can do some tricks with splitting square roots up but pulling out whole numbers like I know that $\sqrt{27}$ is just $\sqrt{3*9}$ so I can pull out a nine which becomes a 3. Here though I have no such options, what can I possibly do?

$$\frac{\sqrt{10}}{\sqrt{5} - 2}=\frac{\sqrt{10}}{\sqrt{5} - 2}\cdot\frac{{\sqrt{5} + 2}}{{\sqrt{5} + 2}}=\frac{10({\sqrt{5}+2})}{5-4}=10({\sqrt{5}+2})$$
