Question

преобразуйте в многочлен
(m-2n)(m²+2mn+4n²)+6n³

Answer 1

$(m-2n)(m^2+2mn+4n^2)+6n^3= \\=m^3+2m^2n+4n^2m-2nm^2-4n^2m-8n^3+6n^3=m^3-2n^3$