Question

6ay³+3a²7a³y+4a²-5ay³7a²
Помогите пж​

Answer 1

$6ay^3+3a^27a^3y+4a^2-5ay^37a^2=\\=6ay^3+3*7a^{2+3}y+4a^2-5*7a^{1+2}y^3=\\=6ay^3+21a^5y+4a^2-35a^3y^3$