3 4 x 5 4x 1 2 2x 3 July 8, 2019 16 32 64 128 5x 4x 3x 2x x =- 1 2 3 4 5 3 x 4 2 5 x 3 2 =( 2x 5 )( 4x 1 )- 40 4x 1 3x 2 2x 3 x 4 5 2x 2 3x 1 2 4x 2 4 2x 4 3 x 5 6