4xy/x方-y方+x-y/x+y=

再次放开你的手2022-10-04 11:39:543条回答

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veryok18 共回答了22个问题 | 采纳率86.4%: =4xy/(x^2-y^2)+(x-y)^2/(x+y)(x-y)=[4xy+(x-y)^2]/(x^2-y^2)=(x+y)^2/[(x+y)(x-y)]=(x+y)/(x-y); 1年前

ranzhang 共回答了858个问题 | 采纳率: 解
(4xy)/(x²-y²)+(x-y)/(x+y)
=(4xy)/(x²-y²)+(x-y)²/(x²-y²)
=[4xy+(x-y)²]/(x²-y²)
=(x+y)²/(x²-y²)
=(x+y)/(x-y); 1年前

茄子开花21 共回答了3017个问题 | 采纳率: 4xy/(x²-y²)+(x-y)/(x+y)
=4xy/(x-y)(x+y)+(x-y)²/(x-y)(x+y)
=(4xy+x²-2xy+y²)/(x-y)(x+y)
=(x+y)²/(x-y)(x+y)
=(x+y)/(x-y); 1年前

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