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Productos Notables.
(a - b)³ =
a³ - 3a²b + 3ab² - b³
(2m - n)³ =
(2m)³ - 3(2m)²n +3(2m)(n)² - n³ =
2³m³ - 3(2²m²)(n) + 6mn² - n³ =
8m³ - 3(4m²)(n) + 6mn² - n³ =
8m³ - 12m²n + 6mn² - n³
Respuesta.
8m³ - 12m²n + 6mn² - n³