1 3x 1 4y )-( 5 6x 3 8y July 8, 2019 16 32 64 128 2 3x 3 4y 1 1 8y 5 6x 2 6xy - 4y + 6 - 9x 1 5x ^ - 3 * y ^ - 4 * 6x ^ 3 * y ^ 5