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20x²-24x+15x-18
20x²-9x-18
aplicamos la propiedad distributiva del producto
(4X+3)(5X-6) =
4x.5x - 4x.6 +3.5x - 3.6 =
20x² - 24x + 15x -18 =
20x² - 9x -18
saludos