Question 838487
{{{(4x-1)^4-1=80}}}
{{{(4x-1)^4=81}}}
{{{(4x-1)^2=9}}}
{{{4x-1=3}}} and {{{4x-1=-3}}}
{{{4x=4}}} and {{{4x=-2}}}
{{{x=1}}} and {{{x=-1/2}}}