Quadratic Equation Solver

gistfile1.js

function quadraticEquation(ar){
var d;
  
  d = Math.pow(ar[1],2)-(4*ar[0]*ar[2]);
  
  if (d<0){
  
  alert("No Solutions!!");
  
  
  } else if (d>0){
   
  var res1 = (- (ar[1])- Math.sqrt(d))/(2*ar[0]);
  
  var res2 = (- (ar[1])+ Math.sqrt(d))/(2*ar[0]);
  
    var o = {};
    
     o["x1"] = res1;
     o["x2"] = res2;
    
   alert(JSON.stringify(o));
  
  }

  if (d===0){
  
  var res = (- (ar[1]))/(2*ar[0]);
  
  alert(res);
  
  }

}


quadraticEquation([8,-14,5]);