Ответы на вопрос:
√x - x = - 12 √x = x - 12 x = (x - 12)² x = (x - 12)(x - 12) x = x² - 12x - 12x + 144 x = x² - 24x + 144 x - x² + 24x - 144 = 0 - x² + 25x - 144 = 0 x² - 25x + 144 = 0 d = b² - 4ac d = ( - 25)² - 4 × 1 × 144 = 625 - 576 = √49 = 7 x₁ = 25 + 7 / 2 = 16 x₂ = 25 - 7 / 2 = 9 ответ: x₁ = 16, x₂ = 9
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