#include<stdio.h>
#include<conio.h>
#include<math.h>
main(){
float delta,a,b,c;
float x,x1,x2,z;
printf("enter a:");
scanf("%f",&a);
printf("enter b:");
scanf("%f",&b);
printf("enter c:");
scanf("%f",&c);
delta=(b*b)-((4)*(a)*(c));
if(delta<0)printf("delta < 0");
if(delta==0){
x=(-b)/(2*a);
printf("X = %3.2f",x);}
if(delta>0){z=sqrt(delta);
x1=(-b-z)/(2*a);
x2=(-b+z)/(2*a);
printf("x1 = %3.2f",x1);
printf("\nx2 = %3.2f",x2);}
printf("\n");
getch();
}