/*
 * Student: S.K. Soekhlal
 * Number: 4860632
 * Assignment: 3.4
 */ 

#include<stdio.h>

void abc();

int a,b,c;

extern double x1real, x2real, ximag;

static void get_parameters(){
    scanf("%d",&a);
    scanf("%d",&b);
    scanf("%d",&c);
}

void print_solution(){
    printf("The roots of %dx^2 + %dx + %d are :\n", a,b,c);
    if(ximag < 1e-99){
        if(x1real == x2real){
            printf("x = %.4f, x2 = %.4f\n",x1real,x2real);
        }
        else{
        printf( "x1 = %.4f, x2 = %.4f\n" ,x1real,x2real);
        }
    }
    else{
        printf("x1 = %.4f+%.4fi , x2 = %.4f-%.4f1\n",x1real,ximag);
    }
}

int main(){
    int runs, run;
    scanf("%d", &runs);
    for (run = 0; run < runs; run++){
        get_parameters();
        abc();
        print_solution();
    }
    return 0;
}