#include<stdio.h>
#include<stdlib.h>
#include<math.h>
int main()
{
FILE *fptr;
int n,i;
double a[60],b[60],c[60],d[60],x1[60],x2[60];

fptr=fopen("E:\\10032326\\in.txt","r");
if(fptr!=NULL)
{
fscanf(fptr,"%d",&n);
for(i=1;i<=n;i++)
{
fscanf(fptr,"%lf %lf %lf",&a[i],&b[i],&c[i]);
d[i]=b[i]*b[i]-4*a[i]*c[i];
}
for(i=1;i<=n;i++)
{
if(d[i]>=0)
{
x1[i]=(-b[i]+sqrt(d[i]))/(2*a[i]);
x2[i]=(-b[i]-sqrt(d[i]))/(2*a[i]);
fclose(fptr);
printf("%.3lf,%.3lf\n",x1[i],x2[i]);
}
else
printf("none\n");
}
}
else
printf("File Opening Failure\n");
system("PAUSE");
return 0;
}