5 1 2x 5 8x 2 July 8, 2019 16 32 64 128 5 2x 1 5 1 8x 71 2 8x 1 )( 5 2x 7 8x )( 5 2x 4x 1 2 =( 2x 5 )( 8x 3 )- 5 4x 1 )( 2x 5 )- 8x 2 5 x 5-7+82/(2x1)+5 5 1/2 x 8