Z^4 = 1 July 8, 2019 16 32 64 128 Z^4 = 16 Z^4 = 16i Z 4 1 Z 4 1 0 Z 4 12 Z 4 16 Z 4 16 0 Z 4 13 Z 4 16i Z 4 15 Z 4 11 Z 4 1 0 roots Z 4 19 Z 4 10 11 Z 4 1 8