9x2 – 25 x3 + 2x2 + 3x + 6 x2 – 49 x2 – 3x + 3xy – 9y 9x2y + 6xy2 27x3 – 1 16x2 – 8x + 1 x2y – xy 6x2 – 20x 125 + 8x3 5x2 – x + 10xy – 2y x2 – 36 18x – 4x2 x3 + x2 + xy + x 4 + 12x + 9x2 x3 – 3x2 + 3x - 1 9x2y – xy2 6x2 + 20x 2x3 – x2 + 2x – 1 x2 – 9 x3 + 8y3 4x2y – 2y x2 – 144 x3 – 3x2 + 3x – 9 64 – x2 9x2 + 18x 100x2 – 20xy + y2 9x2 – 27x x3 + x2 + 2x + 2 4x4 – 9