Question 840767
<pre>
{{{sqrt(1/2)}}}{{{""-""}}}{{{sqrt(1/8)}}}

{{{sqrt(1)/sqrt(2)}}}{{{""-""}}}{{{sqrt(1)/sqrt(8))}}}

{{{1/sqrt(2)}}}{{{""-""}}}{{{1/sqrt(8))}}}

{{{1/sqrt(2)}}}{{{""-""}}}{{{1/sqrt(4*2))}}}

{{{1/sqrt(2)}}}{{{""-""}}}{{{1/(sqrt(4)*sqrt(2))}}}

{{{1/sqrt(2)}}}{{{""-""}}}{{{1/(2*sqrt(2))}}}

Multiply each fraction by {{{sqrt(2)/sqrt(2)}}} which equals 1:

{{{1/sqrt(2)}}}{{{""*""}}}{{{sqrt(2)/sqrt(2)}}}{{{""-""}}}{{{1/(2*sqrt(2))}}}{{{""*""}}}{{{sqrt(2)/sqrt(2)}}}

{{{(1*sqrt(2))/(sqrt(2)*sqrt(2))}}}{{{""-""}}}{{{(1*sqrt(2))/(2*sqrt(2)*sqrt(2))}}}

{{{sqrt(2)/2}}}{{{""-""}}}{{{sqrt(2)/(2*2)}}}

{{{sqrt(2)/2}}}{{{""-""}}}{{{sqrt(2)/4}}}

Get lowest common denominator of 4

{{{2*sqrt(2)/(2*2)}}}{{{""-""}}}{{{sqrt(2)/4}}}

{{{2*sqrt(2)/4}}}{{{""-""}}}{{{sqrt(2)/4}}}

{{{2*sqrt(2)-sqrt(2))/4}}}

{{{sqrt(2)/4}}}

Edwin</pre>