Arithmetic : Powers and Roots Question

Hi All,

I'm new to the forum so firstly hello. The following question may be rudimentary given the level of ability of some of you but I would very much appreciate a clear understanding/answer.

1. Can someone help me understand how 2√27 simplifies to (2 X 3 X √3).

2. Can someone help me understand how 3^√27 X 3^√3 simplifies to 3^3√3

I've read quite a few of the web manuals on Powers and Roots but these specific examples are a block for me. If anyone can point me towards a comprensive resource I'd very much appreciate it.

Thanks in Advance.