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How to solve Simple Quadratic Equation in Java ?.

Program to solve Simple Quadratic Equation in Java.





Click here to download complete source code 


import java.util.Scanner;

public class Quadratic
{
  public static void main(String[] args)
  {
    Scanner input = new Scanner(System.in);
  
    double a = 0;
    double b = 0;
    double c = 0;
    double discriminant = 0;
    double d = 0;
  
    System.out.print("Enter the value of a : "); 
    a = input.nextDouble();

    System.out.print("Enter the value of b : "); 
    b = input.nextDouble();

    System.out.print("Enter the value of c : "); 
    c = input.nextDouble();
  
    discriminant = (b * b - 4 * a * c);
  
    d = Math.sqrt(discriminant);
  
    if (discriminant >= 0.0) {
       System.out.println("First root of the equation : "
                   +(-b + d) / (2.0*a));
       
       System.out.println("Second root of the equation : "
                   +(-b - d) / (2.0*a));
    } 
    else 
    {
       System.out.println("The roots are not real numbers.");
    }
  }
} 



Click here to download complete source code 


Output of the program : 
 
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