5x 1 2 4 25 July 8, 2019 16 32 64 128 1 4x 4 5x 2 25 17 25 5x 1 2 40 =- 4 25x 2 5x 1 4 5x 2 3x 4 )= 25 3 5x 1 2 5x 1 4 5 8x 0 25 x 2x 5