2 1 3 6x 9 3 July 8, 2019 16 32 64 128 3 2 5x 1 )= 3 6x 9 4 1 6x 3 6 2 9 0 3x 1 6x 3 6 2 9 0 3 2 x 3 )/ 4 1 2 6x 9 3 3x 1 )( 6x 9 )-( 2x 3 2 1 2 6x 3 8x 3x 9 13 2 9x 3 6x 2 28x 9 )/( 3x 1 9 2x 1 )/ 3 6x 2 )/ 5 1 3 6x 1 3 )( 36x 2 2x 1 9 3-2x 1 1 6+x 2 9