∴|-3k-1+n-km|/√(k^2+1)=|-4/k-5+n+m/k|/√(1/k^2+1) 化简,得：(2-m-n)k=m-_数学解答 - 作业小助手

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∴|-3k-1+n-km|/√(k^2+1)=|-4/k-5+n+m/k|/√(1/k^2+1) 化简,得：(2-m-n)k=m-n-3或(m-n+8)k=m+n-5 怎么来

人气：461 ℃　时间：2020-06-16 14:51:34

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