作业帮(x^3-2x^2+xy^2)/(x-y)+(x+y)(y-x)=?
来源：学生作业帮助网 编辑：作业帮 时间：2024/07/07 04:43:25
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(x^3-2x^2+xy^2)/(x-y)+(x+y)(y-x)=?
(x^3-2x^2+xy^2)/(x-y)+(x+y)(y-x)=?
(x^3-2x^2+xy^2)/(x-y)+(x+y)(y-x)=?
(x^3-2x^2y+xy^2)/(x-y)+(x+y)(y-x)
=x(x^2-2xy+y^2)/(x-y)+(x+y)(y-x)
=x(x-y)^2/(x-y)-(x+y)(x-y)
=x(x-y)-(x+y)(x-y)
=(x-(x+y))(x-y)
=-y(x-y)
=y(y-x)
路过
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