2y 2 5y 12 July 8, 2019 16 32 64 128 2y 2 5y 12 0 2y 3 5y 2 12y 30 X 2 3xy 2y 2 x 5y 12 6x 2 7xy 2y 2 6x 5y 12 5y 2 5 2y 12 1
