Задача Задача №483003
А
А
(5-x)² - 21 = 5x - 13x 25 - 10x + x² - 21 = -8x x² - 10x + 4 = -8x x² - 10x + 8x + 4 = 0 x² - 2x + 4 = 0
Ответ: x² - 2x + 4 = 0
(5-x)² - 21 = 5x - 13x 25 - 10x + x² - 21 = -8x x² - 10x + 4 = -8x x² - 10x + 8x + 4 = 0 x² - 2x + 4 = 0
Ответ: x² - 2x + 4 = 0
