658
#include <stdio.h>
#include <math.h>
int main()
{
double a,b,c,x1,x2;
scanf("%lf%lf%lf",&a,&b,&c);
if(fabs(a)<1e-15)
printf("Impossivel calcular");
else if((b*b-4*a*c)<0)
printf("Impossivel calcular");
else
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
printf("R1 = %.5lf\nR2 = %.5lf\n",x1,x2);
}
return 0;
}
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