因式分解:3n^2-4mn+m^2

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因式分解:3n^2-4mn+m^2因式分解:3n^2-4mn+m^2因式分解:3n^2-4mn+m^23n^2-4mn+m^2=(3n-m)(n-m)(n-m)(3n-m)(3n-m)(n-m)(3n

因式分解:3n^2-4mn+m^2
因式分解:3n^2-4mn+m^2

因式分解:3n^2-4mn+m^2
3n^2-4mn+m^2
=(3n-m)(n-m)

(n-m)(3n-m)

(3n-m)(n-m)

(3n-m)(n-m)

=(3n-m)(n-m)