Which of the following numbers is the root of the equation x2+x+1=0x^2 + x + 1 = 0x2+x+1=0?
ei2π/3e^{i2\pi/3}ei2π/3
ei4π/3e^{i4\pi/3}ei4π/3
−1/2+i3/2-1/2 + i\sqrt{3}/2−1/2+i3/2
All of the above