Question 76933
<pre><b><font size = 5>20 over
Cube Root of 5 

{{{20/root(3,5)}}}

You need two more 5's under that cube root radical
so it will be the cube root of five cubed. So
multiply by {{{root(3,5*5)/root(3,5*5)}}}

{{{20/root(3,5)}}}{{{root(3,5*5)/root(3,5*5)}}}

{{{ (20root(3,5*5))/root(3,5*5*5)}}}

{{{ (20root(3,25))/root(3,5^3)}}}

{{{ (20root(3,25))/5}}}

{{{4*root(3,25)}}}

Edwin</pre>