x*y = 1
2*x + y = 6
0.177124344467705
5.64575131106459
2.8228756555323
0.354248688935409
x1 = 0.1771243444677047 y1 = 5.645751311064591
x2 = 2.822875655532295 y2 = 0.3542486889354094