Question 992357


{{{4(2x^3y^4)^-2}}}

{{{4(1/(2x^3y^4)^2)}}}

{{{4/(2^2(x^3)^2(y^4)^2)}}}

{{{4/(4x^6y^8)}}}

{{{cross(4)1/(cross(4)x^6y^8)}}}

{{{1/(x^6y^8)}}}