Question 87828
{{{ sqrt(sqrt(80)) }}}


A square root of a square root is actually a 4th root:  {{{root(4,80) }}}.
To do a 4th root, you must know that 2^4=16 and 3^4= 81.  In this case, since 80 is divisible by 16, we use this number:

{{{root(4,80) }}}

{{{root(4,16)*root(4,5) }}}
{{{2* root(4,5) }}}


R^2  Retired from SCC