2*x + y = 4
x*y + 2*x = -12
x*y + 2*x = -12
-1.37228132326901
6.74456264653803
4.37228132326901
-4.74456264653803
x1 = -1.372281323269014 y1 = 6.744562646538029
x2 = 4.372281323269014 y2 = -4.744562646538029
x2 = 4.372281323269014 y2 = -4.744562646538029