Respuesta :

So we have:

4x^3y^4

______

-8xy^2

Subtract the y-exponents:

4x^3y^2

______

  -8x

Subtract the x-exponents:

4x^2y^2

______

   -8

Break up fraction and simplify:

4/-8*x^2*y^2

-1/2x^2y^2

So your answer is C