1 8 0 9 2 July 8, 2019 16 32 64 128 1 8 0 3y )( 2y 9 )= 0 1 8 2 5 0 9 3x 2 1 8 0 5 9 0 3x 8 1 0 8x 2 9 1 2 3 8 9 0 27 8 9 0 1 1 2 x 0 8 2 0 9 x 9 2x 1 2 8 0 0 9 2 8 - 4 1