3/(x-1)(x-2),4/(2-x)(5-x),5/(x-3)通分

清晨的黄昏 1年前 已收到1个回答 举报

唯美的心醉 幼苗

共回答了22个问题采纳率:86.4% 举报

(2-x)(5-x)=(x-2)(x-5)
所以最简公分母是(x-1)(x-2)(x-3)(x-5)
所以
3/(x-1)(x-2)=3(x-3)(x-5)/(x-1)(x-2)(x-3)(x-5)
4/(2-x)(5-x)=4(x-1)(x-3)/(x-1)(x-2)(x-3)(x-5)
5/(x-3)=5(x-1)(x-2)(x-5)/(x-1)(x-2)(x-3)(x-5)

1年前

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