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Productos notables.
(a - b)² = a² - 2ab + b²
(6x - 4y)² =
(6x)² - 2(6x)(4y) + (4y)² =
6²x² - 48xy + 4²y² =
36x² - 48xy + 16y²
Respuesta.
(6x - 4y)² =
36x² - 48xy + 16y²