Ответ

6m(2m^2 – m + 4) – (8m^3 + 2m^2 – 7) – 2m(2m^2 – 4m + 12) =
= 12m^3 – 6m^2 + 24m – 8m^3 – 2m^2 + 7 – 4m^3 + 8m^2 – 24m =
= (12m^3 – 8m^3 – 4m^3) + (-6m^2 – 2m^2 + 8m^2) + (24m – 24m) + 7 = 7
гдз ответы и решения
6m(2m^2 – m + 4) – (8m^3 + 2m^2 – 7) – 2m(2m^2 – 4m + 12) =
= 12m^3 – 6m^2 + 24m – 8m^3 – 2m^2 + 7 – 4m^3 + 8m^2 – 24m =
= (12m^3 – 8m^3 – 4m^3) + (-6m^2 – 2m^2 + 8m^2) + (24m – 24m) + 7 = 7