function solve(a,b,c){
    var result = (((-1*b) + Math.sqrt(Math.pow(b,2)) - (4*a*c))/(2*a));
    var result2 = (((-1*b) - Math.sqrt(Math.pow(b,2)) - (4*a*c))/(2*a));
    
    return result + "
" + result2;
}

document.write( solve(1,1,-1) );