#include<math.h>
#include<stdio.h>
int main(void)
{float a,b,c,disc,p,q;
printf("Please enter the coefficients a,b,c:");
scanf("%f,%f,%f",&a,&b,&c);
disc=b*b-4*a*c;
p=-b/(2*a);
q=sprt(disc)/(2*a);
printf("x1=%7.4f,x2=%7.4f\n",p+q,p-q);
return 0;
}