Question

Simplique as expressões a)(a-b).(a^2+ab+b^2)

Answer 1

(a-b).(a^2+ab+b^2)a-b) =

a.(a^2+ab+b^2) - b.(a^2+ab+b^2)

a³+a²b+ab² -a²b-ab²-b³

a³ - b³