(-2m-1)*(3m-2)=?

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(-2m-1)*(3m-2)=?

(-2m-1)*(3m-2)=?
(-2m-1)*(3m-2)=?

(-2m-1)*(3m-2)=?
原式=-(2m+1)(3m-2)
=-[6m^2-m-2]
=-6m^2+m+2

(-2m-1)(3m-2)=-6m²+m+2

原式=-2m(3m-2)-(3m-2)
=-6m²+4m-3m+2
=-6m²+m+2

(-2m-1)*(3m-2)==-6m²+m+2

原式= - 6m² +4m - 3m+2
= -6m² +m+2