Multiple choice The common roots of the equation $x^{12}-1=0,x^{4}+x^{2}+1=0$ are $\omega,\omega^{2}$ $-\omega,-\omega^{2}$ $\pm\omega,\pm\omega^{2}$ $\pm\omega^{2},\pm\omega^{5}$ Reveal answer Fill a bubble to check yourself A Correct answer