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数学
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因式分解xy^2-2xy+y^2+x+2y-1
急
人气:136 ℃ 时间:2019-09-25 08:40:46
解答
题目似乎有错,你看看y^2前是不是该是“-”号,如果是的话就是,(x-1)*(y-1)^2
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