Question 267205
(8x^3y^5/4x^2y^-3)^-1
(4x^2y^-3)/(8x^3y^5
(4x^2)/(8x^3y^(5+3))
(4x^2/(8x^3y^8)
1/(2x^3-2)y^8
1/(2xy^8) ans.