化简:a一(3a一b)十(2a十3b)= |/2m^2n^2一(|/3m^2n^2十m^2n^2)

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化简:a一(3a一b)十(2a十3b)= |/2m^2n^2一(|/3m^2n^2十m^2n^2)
化简:a一(3a一b)十(2a十3b)= |/2m^2n^2一(|/3m^2n^2十m^2n^2)

化简:a一(3a一b)十(2a十3b)= |/2m^2n^2一(|/3m^2n^2十m^2n^2)