Задача Задача №788684
А
А
(4x-1)(x+3)-(2x-1)² = 4x² + 12x - x - 3 - (4x² - 4x - 4x + 1) = 4x² + 12x - x - 3 - 4x² + 4x + 4x - 1 = 12x - x - 3 + 4x + 4x - 1 = 15x - 4
(4x-1)(x+3)-(2x-1)² = 4x² + 12x - x - 3 - (4x² - 4x - 4x + 1) = 4x² + 12x - x - 3 - 4x² + 4x + 4x - 1 = 12x - x - 3 + 4x + 4x - 1 = 15x - 4
