计算:-2m(m^2-1/2m+3)
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计算:-2m(m^2-1/2m+3)计算:-2m(m^2-1/2m+3)计算:-2m(m^2-1/2m+3)-2m(m^2-1/2m+3)=(-2m)*m^2-(-2m)*1/2m+(-2m)*3=-
计算:-2m(m^2-1/2m+3)
计算:-2m(m^2-1/2m+3)
计算:-2m(m^2-1/2m+3)
-2m(m^2-1/2m+3)
=(-2m)*m^2-(-2m)*1/2m+(-2m)*3
=-2m^3+m^2-6m
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