if x and y are the roots of the quadratic equation {general form}then what is the value ofx/y whole square+y/x whole square is equal to?

x,y are the roots of the quadratic eq at² +bt +c

x+y =-b/a 7 xy =c/a

 now we have (x/y)² + (y/x)²

               = x⁴ +y⁴ /(xy)²

               ={(x² +y²)² - 2(xy)² }/(xy)²                                            {x⁴ +y⁴  +2(xy)²} = (x² +y²)²

              ={ ( (x+y)² -2xy)² -2(xy)² )/(xy)²                               {x² +y² +2xy) =(x+y)²

now substituting values of x+y and xy

              {(b² -2ac)² -2(ac)² }/(ac)²    this is the value of (x/y)² + (y/x)²