√10-x^2-2x+1=0 Корень из 10x-x^2 минус 2х+1=0

√10x - x² - 2x + 1 = 0 √10x - x² = 2x - 1 10x - x² = (2x - 1)² 10x - x² = (2x - 1)(2x - 1) 10x - x² = 4x² - 2x - 2x + 1 10x - x² = 4x² - 4x + 1 10x - x² - 4x² + 4x - 1 = 0 - 5x² + 14x - 1 = 0 5x² - 14x + 1 = 0 D = b² - 4ac D = (-14)² - 4 × 5 × 1 = 196 - 20 = 176 x₁ = 14 + √176/ 10, x₂ = 14 - √176/ 10