x^2 + 12x - 27 = 4
x^2 + 12x - 31 = 0
D = 144 + 4*31 = 144 + 144 = 288
x1 = (-12 + 12корень2)2 = -6 + 6корень2
x2 = -6 - 6корень2
x^2 + 12x - 27 = 4
x^2 + 12x - 31 = 0
D = 144 + 4*31 = 144 + 144 = 288
x1 = (-12 + 12корень2)2 = -6 + 6корень2
x2 = -6 - 6корень2