Question

efetue os seguintes desenvolvimento (a-3)⁴​

Answer 1

Resposta:

$(a-3)^4=(a-3)^2.(a-3)^2\\(a-3)^2=a^2-2.a.3+3^2\\=a^2-6a+9 Ent\~ao: (a-3)^2.(a-3)^2=(a^2-6a+9).(a^2-6a+9)\\=a^4-6a^3+9a^2-6a^3+36a^2-54a+9a^2-54a+81\\=a^4-6a^3-6a^3+9a^2+36a^2+9a^2-54a-54a+81\\=a^4-12a^3+54a^2-108a+81$

Espero ter sido útil