#include#includeint main(){double a,b,c,disc,p,q,x1,x2;scanf("%lf%lf%lf",&a,&b,&c);disc=b*b-4*a*c;if(a != 0){if(disc0)printf("%f%f\n",x1,x2);else printf("%f\n",x1);}}else if(b == 0){if(c == 0)printf("...