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

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-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