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因式分解m^2-1-4n^2+4n
人气:356 ℃ 时间:2020-03-23 19:11:21
解答
m^2-1-4n^2+4n
=m^2-(4n^2-4n+1)
=m^2-(2n-1)^2
=(m+2n-1)(m-2n+1)
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