#include #include main() { float a,b,c,x1,x2,d; scanf("%f %f %f\n",&a,&b,&c); d=b*#include#includemain(){float a,b,c,x1,x2,d;scanf("%f %f %f\n",&a,&b,&c);d=b*b-4*a*c;if(d>=0 )if(d==0 ){ x1=x2=-b/(2*a);printf("x1=x2=%f\n",x1);}else{ x1=(-b+sqrt(d))/(2

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