2 4 5x 2 July 8, 2019 16 32 64 128 2x 4 5x 2 2x 4 5x 2 3 0 2x 4 5x 2 3 2x 4 5x 2 12 0 2x 4 5x 2 12 20x 4 5x 2 2x 4 5x 2 0 2x 4 5x 2 1 2x 4 5x 2 3x 2 4 2x ) 5x 5 2 5x 4 2 3 2 5x 4 )= 28 2 5x 4 2 3x 2x 4 6 - 5x 2 2 x 4 )- 5x 2