1 2x 5 1 5x 2 2 July 8, 2019 16 32 64 128 4 5x 1 10x 1 2x 2 2 5 5 (- 2x 1 )- 5x 2 27 25 2x 2 =( 1 5 5x 1 2x 1 3x 5 then 5x 6x 2 20x 1
