Convert $$\sqrt[]{72}$$   to its simplest radical form.

Hint: $$\sqrt[]{72}=\sqrt[]{2\cdot2\cdot2\cdot3\cdot3}$$  

Write $$\sqrt[3]{432}$$   in its simplest radical form.

Hint: $$\sqrt[3]{432}=\sqrt[3]{2\cdot2\cdot2\cdot2\cdot3\cdot3\cdot3}$$  

Simplify

$$\sqrt{24}$$  

Convert $$\sqrt[]{32}$$   to its simplest radical form.

Simplify:

$$3\sqrt{125}$$  

Add the following radicals:

$$2\sqrt[]{3}+2\sqrt[]{3}$$  

Add the following radicals:

$$\sqrt[]{20}+3\sqrt[]{5}$$  

(simplify first radical before combining)