Question 865584
{{{x^-4/3^-2}}}
Multiply by 3^2/3^2
= {{{x^-4*3^2/3^(-2+2)}}}
= {{{9x^-4/1}}}
Multiply by x^4/x^4
= {{{9x^(-4+4)/x^4}}}
= {{{9/x^4}}}