Odpowiedź :
Hej!
1)
x² - 3x + 2 = 0
a = 1, b = -3, c = 2
Delta = (-3)² - 4 * 1 * 2 = 9 - 8 = 1
pierw{Delta} = 1
x1 = (-(-3) - 1)/(2 * 1) = 2/2 = 1
x2 = (-(-3) + 1)/(2 * 1) = 4/2 = 2
b)
x² - 4 = 0
(x + 2)(x - 2) = 0
x = -2 lub x = 2
Pozdrawiam! - Julka