eros racionais , onde for possível.  E.g.
</p>
<pre class="example">(%i1) load (sqdnst)$
(%i2) sqrt(sqrt(3)/2+1)/sqrt(11*sqrt(2)-12);
                                    sqrt(3)
                               sqrt(------- + 1)
                                       2
(%o2)                        ---------------------
                             sqrt(11 sqrt(2) - 12)
(%i3) sqrtdenest(%);
                                  sqrt(3)   1
                                  ------- + -
                            