Find all zzz such that z4+1=0z^4 + 1 = 0z4+1=0.
(1+i)/2,(1−i)/2,(−1+i)/2,(−1−i)/2(1+i)/2, (1-i)/2, (-1+i)/2, (-1-i)/2(1+i)/2,(1−i)/2,(−1+i)/2,(−1−i)/2
±(1+i)/2\pm(1+i)/\sqrt{2}±(1+i)/2
eiπ/4,ei3π/4,ei5π/4,ei7π/4e^{i\pi/4}, e^{i3\pi/4}, e^{i5\pi/4}, e^{i7\pi/4}eiπ/4,ei3π/4,ei5π/4,ei7π/4
±eiπ/4,±ei3π/4\pm e^{i\pi/4}, \pm e^{i3\pi/4}±eiπ/4,±ei3π/4