Question 116270
{{{log(3,(x^5y^4/81)^(1/4))}}}
= {{{ log(3,x^(5/4)) + log(3,y^(4/4)) - log(3,81^(1/4)) }}}
= {{{ (5/4)log(3,x) + log(3,y) - log(3,(3^4)^(1/4)) }}}
= {{{ (5/4)log(3,x) + log(3,y) - log(3,3) }}}
= {{{ (5/4)log(3,x) + log(3,y) - 1 }}}

Hope this helps!