java programming |Write a java program that display the roots of a quadratic equation ax2+bx=0. Calculate the discriminate D and basing on value of D, describe the nature of root.

import java.io.*;

class Quadratic

{

public static void main(String args[])throwsIOException

{

double x1,x2,disc,a,b,c;

InputStreamReader obj=new InputStreamReader(System.in);

BufferedReader br=new BufferedReader(obj);

System.out.println("enter a,b,c values");

a=Double.parseDouble(br.readLine());

b=Double.parseDouble(br.readLine());

c=Double.parseDouble(br.readLine());

disc= (b*b)-(4*a*c);

if (disc==0)

{

System.out.println("roots are real and equal ");

x1=x2=b/(2*a);

System.out.println("roots are "+x1+","+x2);

}

else if(disc>0)

{

System.out.println("roots are real and unequal");

x1=(-b+Math.sqrt(disc))/(2*a);

x2=(b+Math.sqrt(disc))/(2*a);

System.out.println("roots are "+x1+","+x2);

}

else

{

System.out.println("roots are imaginary");

}

}

}

Output:

The above Java program is executed and its output is verified.

Enter a,b,c values:

4

4

1

Roots are real and equal

Roots are -0.5, -0.5