(x² - 5x) + 5 - x = 0
x² - 5x + 5 - x = 0
x² - 6x + 5 = 0
D = (- 6)² - 4 * 5 = 36 - 20 = 16 = 4²
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(x² - 5x) + 5 - x = 0
x² - 5x + 5 - x = 0
x² - 6x + 5 = 0
D = (- 6)² - 4 * 5 = 36 - 20 = 16 = 4²
Х^2-6х+5=о
Д=36-4*5=36-20=16 д=4
Х1=1 х2=5