2(x十1)分之3,3(x一1)分之2x,x^2一1分之1一2x通分

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2(x十1)分之3,3(x一1)分之2x,x^2一1分之1一2x通分
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2(x十1)分之3,3(x一1)分之2x,x^2一1分之1一2x通分
2(x十1)分之3,3(x一1)分之2x,x^2一1分之1一2x通分

2(x十1)分之3,3(x一1)分之2x,x^2一1分之1一2x通分
6(x+1)(x-1)