2 2x 5 4x 13 July 8, 2019 16 32 64 128 3x 1 6x 2 2x 5 4x 13 14x 2 2x 3 (- 4x 5 )- 13 2x 3 5 4x 2 13 8 2x 5 7x 4 13 4x 2 6x 8 2 x 2 5