Объяснение:
1) =4a^3+a^2-3a^3-2a^2=a^3-a^2 ( ^ -знак степени)
2) =2b^2-8b+7=5b^2+b-2=7b^2-7b+5
3) =ac-bc-dc+ac2ac-2bc
4) =6x^3-3x-4x^2+2x=6x^3-4x^2-x
5) =3m^2-2m^2n+9n^2-2m^2n-9n^2=3m^2-4m^2n
Объяснение:
1) =4a^3+a^2-3a^3-2a^2=a^3-a^2 ( ^ -знак степени)
2) =2b^2-8b+7=5b^2+b-2=7b^2-7b+5
3) =ac-bc-dc+ac2ac-2bc
4) =6x^3-3x-4x^2+2x=6x^3-4x^2-x
5) =3m^2-2m^2n+9n^2-2m^2n-9n^2=3m^2-4m^2n