_ _ _
Ö5(Ö5 + Ö2)
_
Distribute the Ö5
_ _ _ _
Ö5·Ö5 + Ö5·Ö2
Multiply underneath the radicals
___ ___
Ö5·5 + Ö5·2
Write 5·5 as 5² and write 5·2 as 10
__ __
Ö5² + Ö10
The square root of the square of 5 takes
away the square and the square root, so
you just have 5. You end up with
__
5 + Ö10
Edwin