#include <stdio.h>
#include <stdlib.h>
#include <math.h>

main()
{
    double a, b, c;
    double d, sqd;
    double x;
    double re, im;
    double re2, im2;

    fprintf(stderr,"Input a b c \n");
    scanf("%lf%lf%lf", &a, &b, &c );

    /* discriminator D 判別式 D */
    d=b*b-4.0*a*c;

    if( d>=0.0 ){
	printf("Method 1\n");
	sqd=sqrt( d );
	x=(-b+sqd)/(2.0*a) ;
	printf("%27.20e ( %e )\n", x , a*x*x + b*x + c );
	x=(-b-sqd)/(2.0*a) ;
	printf("%27.20e ( %e )\n", x , a*x*x + b*x + c );

	printf("Method 2\n");
	if( b>0.0 ){
	    x=(-b-sqd)/(2.0*a) ;
	}else{
	    x=(-b+sqd)/(2.0*a) ;
	}
	printf("%27.20e ( %e )\n", x , a*x*x + b*x + c );
	x = (c/a)/x ;
	printf("%27.20e ( %e )\n", x , a*x*x + b*x + c );
    }else{
	/* ここから先は精度の話題にはあまり関係ない */
	re=-b*(2.0*a);
	im=sqrt( -d )/(2.0*a);
	
	re2=a*(re*re-im*im) + b*re + c ;
	im2=re*im+im*re + b*im ;
	printf("%e + %e i ( %e + %e i )\n", re2, im2 );

	im = -im ;
	re2=a*(re*re-im*im) + b*re + c ;
	im2=re*im+im*re + b*im ;
	printf("%e + %e i ( %e + %e i )\n", re2, im2 );
    }
}