#include <stdio.h> #include<math.h> int main() { float a,b,c,p,o,i,m,n,y; while(scanf("%f %f %f",&a,&b,&c)!=EOF){ if(a==0){printf("Not quadratic equation");} p=b*b-4*a*c; o=(-b+sqrt(p))/(2*a);i=(-b-sqrt(p))/(2*a); if(p>0&&a!=0){printf(&...