帮忙算一下2/(x-1)(x-3)+4/(x+1)(x-3)+2/(x+1)(x-1)=2/(x-1)(x-3)+4/(x+1)(x-3)+2/(x+1)(x-1)= 用裂项计算法算

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帮忙算一下2/(x-1)(x-3)+4/(x+1)(x-3)+2/(x+1)(x-1)=2/(x-1)(x-3)+4/(x+1)(x-3)+2/(x+1)(x-1)= 用裂项计算法算
帮忙算一下2/(x-1)(x-3)+4/(x+1)(x-3)+2/(x+1)(x-1)=
2/(x-1)(x-3)+4/(x+1)(x-3)+2/(x+1)(x-1)= 用裂项计算法算

帮忙算一下2/(x-1)(x-3)+4/(x+1)(x-3)+2/(x+1)(x-1)=2/(x-1)(x-3)+4/(x+1)(x-3)+2/(x+1)(x-1)= 用裂项计算法算
2/(x-1)(x-3)+4/(x+1)(x-3)+2/(x+1)(x-1) =1/(x-3)-1/(x-1)+1/(x-3)-1/(x+1)+1/(x-1)-1/(x+1) =2/(x-3)-2/(x+1) =8/(x-3)(x+1)