Question 942825
{{{(xy)^(-2)(x^(-2)y)-1}}}


{{{(1/(xy)^2)*((1/x^2)y)-1}}}


{{{(1/(x^2y^2))*((y/x^2))-1}}}


{{{y/(x^2y^2*x^2)-1}}}


{{{y/(x^4y^2)-1}}}


{{{y/(x^4y^2)-1(x^4y^2)/(x^4y^2)}}}


{{{(y-x^4y^2)/(x^4y^2)}}}

{{{(cross(y)1-x^4y^cross(2))/(x^4y^cross(2))}}}


{{{(1-x^4y)/(x^4y)}}}