2 3 0 4 x 4 5 July 8, 2019 16 32 64 128 2 3 0 9 х 4 5 3 2 x )-( 5x 4 )= 0 4 16x 0 3 x 2 )= 0 4 5 x )- 4 7 5x 3 )( x 2 4 )( x 4 )= 0