Question 1086115
<pre><b>
{{{(m-t)^2-x}}}

Write {{{x}}} as {{{(sqrt(x))^2}}}

{{{(m-t)^2-(sqrt(x))^2}}}   <-- difference of two squares

{{{((m-t)^""^""-(sqrt(x)))((m-t)^""^""+(sqrt(x)))}}} <--product of the difference
and sum of their two square roots
 
{{{(m-t^""^""-sqrt(x))(m-t^""^""+sqrt(x))}}}  <--removing inner parentheses 

Edwin</pre></b>