(х-3)² + (х-4)² - (х-5)² - х =24
x² - 6x + 9 + x² - 8x + 16 - x² + 10x - 25 - x -24 = 0
x² -5x -24 = 0
D = 25 + 96 = 121
x12 = (5 +- 11)/2 = -3 8
Ответ x={-3, 8}
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(х-3)² + (х-4)² - (х-5)² - х =24
x² - 6x + 9 + x² - 8x + 16 - x² + 10x - 25 - x -24 = 0
x² -5x -24 = 0
D = 25 + 96 = 121
x12 = (5 +- 11)/2 = -3 8
Ответ x={-3, 8}