Question

Calcule a diferença entre o cubo de (4a-b)e o cubo de (4a+b).​

Answer 1

Resposta:

(4a-b)³ -(4a+b)³

=64a³-48a²b+12ab²-b³ -64a³-48a²b-12ab²-b³

=-2b³-96a²b = -2b* (b²+48a²)