How are you supposed to add radicals?

You can only add like radicals.......be careful though.......some may be in "diguised" form......Example :

√2   + √8   =

√2   + √[ 4 * 2]   =

√2   +  √4 * √2   =

√2   +    2 √2   = 

3 √2

Lesson :  Simplify all radicals, first  !!!!!