因式分解:4m^2-n^2-1+2n

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因式分解:4m^2-n^2-1+2n
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因式分解:4m^2-n^2-1+2n
因式分解:4m^2-n^2-1+2n

因式分解:4m^2-n^2-1+2n
4m^2-n^2-1+2n
=4m^2-(n^2+1-2n)
=4m^2-(n-1)^2
=(2m+n-1)(2m-n+1)

=(2m)^2-(n-1)^2=(2m加n-1)(2m-n加1)