please jawab+ caranya thnks

4. (x × y^3)^-1 / (x^-1 × y^2)^3
= (x^-1 × y^-3) / (x^-3 × y^6)
= x^-1 × y^-3 × x^3 × y^-6
= x^(-1 + 3) × y^(-3 - 6)
= x^2 × y^-9 (E)

5. (x^3 × y^6) / (x^4 × y^-3) ÷ (x^7 × y) / (x × y^-4)
= x^3 × y^6 × x^-4 × y^3 × (x × y^-4) / (x^7 × y)
= x^(3 - 4) × y^(6 + 3) × x × y^-4 × x^-7 × y^-1
= x^(-1 + 1 - 7) × y^(9 - 4 - 1)
= x^-7 × y^4 (B)

jika membantu tolong jadiin jawaban ter-brainly yaa makasih