2x 2 3x )( 5x 2 2x 1 July 8, 2019 16 32 64 128 2x 2 3x 1 )(- 5x 2 2x 4 2x 2 3x 1 )( 2x 2 5x 1 )= 9x 2 2x 2 3x 2 5x 12