text: #include<stdio.h>
  #include <math.h>
  
  int main()
  {
   double a, b, c, t;
   scanf("%lf %lf %lf", &a, &b, &c);
  
   if(((b * b) - 4 * a * c) < 0 || a == 0){
       printf("Impossivel calcular\n");
   }
   else{
    t = sqrt((b * b) - 4 * a * c);
    printf("R1 = %.5lf\nR2 = %.5lf\n", ((-b + t) / (2 * a)), ((-b - t) / (2 * a)));
      }
   return 0;
  }