3 z 1 2 4z z 1 July 8, 2019 16 32 64 128 Z 4 3z 3 2z 2 4z 4 )( z 1 1 3 1 z )-( z 1 )( 5 4z )+ 4z 2 Z-1 = z+1 Z^3 = i
