Question

Se x= 
$[x^{2} y ^{ -1} (xy ^{-2}) ^{4} . ( x^{-1} ) ^{-2} ] : [ x^{-4} . x . x^{3} . y^{-1} . x^{-3} . y^{2} ]$

Answer 1

[x²y-¹.(xy-²)^4.(x-¹)-²]: [x^-4.x.x³.y-¹.x-³.y²]
x².x^4.x-².y-¹.y^-8]:[x^-4.x^4.x-³.y-¹.y²]
x^4.y^-9]:[x-³.y¹]
x.y^-8