-1/9m^3-1+2/3m

来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/23 10:15:42
-1/9m^3-1+2/3m-1/9m^3-1+2/3m-1/9m^3-1+2/3m-1/9m^3+2/3m-1=-1/9m^3-1/3m^2+1/3m^2+m-1/3m-1=(1/3m+1)(-1/

-1/9m^3-1+2/3m
-1/9m^3-1+2/3m

-1/9m^3-1+2/3m
-1/9m^3+2/3m-1=-1/9m^3-1/3m^2+1/3m^2+m-1/3m-1
=(1/3m+1)(-1/3m^2+m-1)

-1/9m^3-1+2/3m
=-1/9(m^2-6m+9)
=-1/9(m-3)^2