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Caso.
Diferencia de cuadrados.
Aplicas.
a² - b² = (a + b)(a - b)
144m⁶ - 49x² =
12²(m³)² - 7²x² =
(12m³ + 7x)(12m - 7x)
Respuesta.
(12m³ + 7x)(12m³ - 7x)