х² - 6х + 8 = 0
Д = (-6)² - 4 × 8 = 4. корень из 4 = 2
x1 = (6 + 2)/2 = 4; x2 = (6 - 2)/2 = 2
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х² - 6х + 8 = 0
Д = (-6)² - 4 × 8 = 4. корень из 4 = 2
x1 = (6 + 2)/2 = 4; x2 = (6 - 2)/2 = 2