m²-4mn+4n²-4
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 20:11:26
![m²-4mn+4n²-4](/uploads/image/z/5295197-29-7.jpg?t=m%26%23178%3B-4mn%2B4n%26%23178%3B-4)
m²-4mn+4n²-4
m²-4mn+4n²-4
m²-4mn+4n²-4
m²-4mn+4n²-4
=(m-2n)²-4
=(m-2n+2)(m-2n-2)
求啥?
(m-2n)平方-4
(m-2n+2)(m-2n-2)
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来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 20:11:26
m²-4mn+4n²-4
m²-4mn+4n²-4
m²-4mn+4n²-4
m²-4mn+4n²-4
=(m-2n)²-4
=(m-2n+2)(m-2n-2)
求啥?
(m-2n)平方-4
(m-2n+2)(m-2n-2)