化简:(x²-2xy+y-1)÷(x-y-1)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 17:27:59
![化简:(x²-2xy+y-1)÷(x-y-1)](/uploads/image/z/1122199-7-9.jpg?t=%E5%8C%96%E7%AE%80%EF%BC%9A%EF%BC%88x%26%23178%3B-2xy%2By-1%EF%BC%89%C3%B7%EF%BC%88x-y-1%EF%BC%89)
化简:(x²-2xy+y-1)÷(x-y-1)
化简:(x²-2xy+y-1)÷(x-y-1)
化简:(x²-2xy+y-1)÷(x-y-1)
(x²-2xy+y²-1)÷(x-y-1)
=[(x-y)²-1]÷(x-y-1)
=(x-y-1)(x-y+1)÷(x-y-1)
=x-y+1
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来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 17:27:59
化简:(x²-2xy+y-1)÷(x-y-1)
化简:(x²-2xy+y-1)÷(x-y-1)
化简:(x²-2xy+y-1)÷(x-y-1)
(x²-2xy+y²-1)÷(x-y-1)
=[(x-y)²-1]÷(x-y-1)
=(x-y-1)(x-y+1)÷(x-y-1)
=x-y+1