3y±2x=03 y \pm \sqrt{2} x=03y±2x=0
2y±3x=0\sqrt{2} y \pm 3 x=02y±3x=0
3x±2y=0\sqrt{3} x \pm \sqrt{2} y=03x±2y=0
2x±3y=0\sqrt{2} x \pm \sqrt{3} y=02x±3y=0