X 2 y 2 4x 6y 5 0 July 8, 2019 16 32 64 128 X 2 2y 2 2xy 4x 6y 5 0 Cho đường tròn x 2 y 2 4x 6y 5 0 A square is inscribed in a circle x 2 y 2 4x 6y 5 0 X+y 2 5+z xy
