2 2x * 5 1 x = 20 July 8, 2019 16 32 64 128 5x 4 2 3x 5 2x 1 20x x 2 27 10x 5 1 x )= 3 2x 2 )- 20 2 x 1 )+ 3 x 5 )= 2x 20 2 x 2 5