2x 2 2y 2 0 July 8, 2019 16 32 64 128 2x 2 2y 2 x 0 2x 2 5xy 2y 2 0 X 2 y 2 2x 2y 2 0 2x 2 2y 2 2xy 2x 6y 13 0 5x 2 5y 2 8xy 2x 2y 2 0 2x 2 2y 2 x 0 find center and radius 2x 2 2y 2 x 0 find centre and radius 2x 2 3xy 2y 2 0 2x 2 2y 2 3x 0 2x 2 2y 2 17x 0 2x 2 2y 2 8 0 2x 2 2y 2 6 0 2x 2 8x 2y 2 0 2x 2 2y 2 8x 7 0 2x 2 2y 2 4x 3y 0