3(m-1)^2+(m+2)(m^2-2m+4)-(m+1)^3 при m=-1/3

Question

3(m-1)^2+(m+2)(m^2-2m+4)-(m+1)^3 при m=-1/3

Answer 1

3m²-6m+3+m³+8-m³-3m²-3m-1=-9m+10
m=-1/3  -9*(-1/3)+10=3+10=13