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Utilizas .
Productos Notables.
(a +b)³ =
a³ + 3a²b + 3ab² + b³
(2a + b)³ =
(2a)³ + 3(2a)²(b) + 3(2a)(b²) + b³ =
2³a³ + 3(2²a²)(b) + 6ab² + b³ =
8a³ + 3(4a²)b + 6ab² + b³
8a³ + 12a²b + 6ab² + b³
Respuesta.
8a³ + 12a²b + 6ab² + b³