因式分解m^2-1-4n^2+4n

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因式分解m^2-1-4n^2+4n

因式分解m^2-1-4n^2+4n
因式分解m^2-1-4n^2+4n

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

m^2-1-4n^2+4n
=m^2-(4n^2-4n+1)
=m^2-(2n-1)^2
=(m+2n-1)(m-2n+1)


m^2-1-4n^2+4n=m^2-(4n^2-4n+1)=m^2-(2n-1)^2=(m+2n-1)(m-2n+1)

m²-(4n²-4n+1)
=m²-(2n-1)²
=(m+2n-10(m-2n+1)

m²-1-4n²+4n
=m²-(4n²-4n+1)
= m²-(2n-1)²
=(m+2n-1)(m-2n+1)

m^2-(4n^2-4n+1)
=m^2-(2n-1)^2 做到这里应该看出来答案了吧。
a^2-b^2=(a+b)(a-b)