Question 46685
<pre><font size = 5><b> _  _    _
<font face = "symbol">Ö</font>5(<font face = "symbol">Ö</font>5 + <font face = "symbol">Ö</font>2)
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Distribute the <font face = "symbol">Ö</font>5
 _  _    _  _
<font face = "symbol">Ö</font>5·<font face = "symbol">Ö</font>5 + <font face = "symbol">Ö</font>5·<font face = "symbol">Ö</font>2

Multiply underneath the radicals
 ___    ___
<font face = "symbol">Ö</font>5·5 + <font face = "symbol">Ö</font>5·2

Write 5·5 as 5² and write 5·2 as 10
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<font face = "symbol">Ö</font>5² + <font face = "symbol">Ö</font>10

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 + <font face = "symbol">Ö</font>10

Edwin</pre>