因式分解m^2-n^2+2n-1

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

因式分解m^2-n^2+2n-1
m^2-n^2+2n-1
=m^2-(n^2-2n+1)
=m^2-(n-1)^2
=[m+(n-1)][m-(n-1)]
=(m+n-1)(m-n+1)

m^2-n^2+2n-1
=m^2-(n^2-2n+1)
=m^2-(n-1)^2
=(m+n-1)(m-n+1)