4 x 4 25 July 8, 2019 16 32 64 128 4 x 4 25 5 X 4 4 256 4 4 х 25 3 4 x 4 25 1 4 x 4 25 4x 4 25 4 2 x 4 =(- 25 4 2 256 4 x 4 2