请问如何化简(4x-y)⼀x^2y^2 - (x+y)⼀xy^3

请问如何化简(4x-y)/x^2y^2 - (x+y)/xy^3
2024-12-16 16:03:14
推荐回答(2个)
回答1:

原式=y(4x-y)/x^2y^3-x(x+y)/x^2y^3
=(4xy-y^2-x^2-xy))/x^2y^3
=-(x^2-3xy+y^2))/x^2y^3
=-[(x-y)^2-xy]/x^2y^3
=[xy-(x-y)^2]/x^2y^3

回答2:

原式=y(4x-y)/x^2y^3-x(x+y)/x^2y^3
=(4xy-y^2-x^2-xy))/x^2y^3
=-(x^2-3xy+y^2))/x^2y^3