因式分解:4m^2-9n^2-4m+1

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因式分解:4m^2-9n^2-4m+1因式分解:4m^2-9n^2-4m+1因式分解:4m^2-9n^2-4m+14m^2-9n^2-4m+1=4m^2-4m+1-9n^2=(2m-1)^2-9n^2

因式分解:4m^2-9n^2-4m+1
因式分解:4m^2-9n^2-4m+1

因式分解:4m^2-9n^2-4m+1
4m^2-9n^2-4m+1=4m^2-4m+1-9n^2=(2m-1)^2-9n^2=(2m+1-3n)(2m+1+3n)

(2m+1-3n)(2m+1+3n)