Question

решите систему уравнений  { у2+ 2х=2 
                                                     {х+ у=1

Answer 1

{y2+2x=2 {1-x+2x=2 {-x+2x=2-1 {x=1 {x=1

{x+y=1      {y=1-x        {y=1-x  {y=1-1  {y=0