Решить уравнение:
x^2+2=x+2

x^2 + 2 = x + 2x^2 + 2 - x - 2 = 0x^2 - x = 0D = (-1)^2 - 4 x 1 x 0 = 1x1.2 = (1 +-  1 ) / 2x1 = (1 + 1) / 2 = 1x2 = (1 - 1) / 2 = 0