Question 416414
{{{(9 /x)^(-4)}}}


= {{{1/(9 /x)^4}}}


= {{{1/(9^4/x^4)}}}.........replace {{{1=1/1}}}


={{{(1/1)/(9^4/x^4)}}}.....multiply outer terms and inner terms


={{{(1*x^4)/(1*9^4)}}}


={{{x^4/9^4}}}


={{{(x/9)^4}}}