Question 1042864
{{{(x+1)/x = 1/6}}}
{{{1+1/x=1/6}}}
{{{1/x=1/6-1}}}
{{{1/x=-5/6}}}
{{{x=-6/5}}}
So then,
{{{(x^4-1)/x^4=1-1/x^4}}}
{{{(x^4-1)/x^4=1-1/(-6/5)^4}}}
{{{(x^4-1)/x^4=1-625/1296}}}
{{{(x^4-1)/x^4=671/1296}}}