9x 2 y 12xy 2 July 8, 2019 16 32 64 128 9x 2 25 12xy 2y 2 10y 9x 2 y 6xy 12xy 2 3 2xy 9x 2 12xy 4 y 2 Y 2 9x 2 12xy 5y 2 2x 9
