Which shows the following expression after the negative exponents have been eliminated? xy^-6/x^-4 y^2, x=/0 y=/0

For this case we have the following expression:
 (xy ^ -6) / (x ^ -4y ^ 2)
 By power properties we can rewrite the expression as:
 (x * x ^ 4) / (y ^ 6 * y ^ 2)
 Then, for power properties:
 Same exponents are added:
 (x ^ (4 + 1)) / (y ^ (6 + 2))
 (x ^ 5) / (y ^ 8)
 
 An expression after the negative exponents have been eliminated is:
 (x ^ 5) / (y ^ 8)

Idon't know the answer