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Caso.
Suma de cubos.
a³ + b³ = (a + b)(a² - ab + b²)
27x³ + 1
3³x³ + 1³ =
(3x + 1)((3x)² - (3x)(1) + 1² =
(3x + 1)(3²x² - 3x + 1)
(3x + 1)(9x² - 3x + 1)
Respuesta.
(3x + 1)(9x² - 3x + 1)