#include <stdio.h>;
#include<math.h>;
int main(void)
{
int a = 1;
int b = 2;
int c = 3;
float delta;
float x1;
float x2;
delta = b * b - 4 * a * c;
if (delta > 0)
{
x1 = (-b + (sqrt(delta)) / (2 * a);
x2 = (-b - (sqrt(delta)) / (2 * a);
printf("该一元二次方程有两个解,x1 = %f,x2 = %f\n", x1, x2);
}
else if (delta == 0)
{
x1 = -b / (2 * a);
x2 = x1;
printf("该一元二次方程有一个唯一解,x1 = x2 =%f\n", x1);
}
else
{
printf("无解\n");
}
return 0;
}