1. import java.io.*;
  2. public class roots
  3. {
  4. public static void main(String args[])
  5. {
  6. int a,b,c;
  7. double r1,r2;
  8. try{
  9. BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
  10. System.out.println("input values of a quadratic equation");
  11. System.out.println("value of a");
  12. a=Integer.parseInt(in.readLine());
  13. System.out.println("value of b");
  14. b=Integer.parseInt(in.readLine());
  15. System.out.println("value of c");
  16. c=Integer.parseInt(in.readLine());
  17. System.out.println (Math.sqrt(Math.pow(b,2)-4*a*c));
  18. r1=(-1)*b +  Math.sqrt(Math.pow(b,2)-4*a*c);
  19. r2=(-1)*b -  Math.sqrt(Math.pow(b,2)-4*a*c);
  20. System.out.println("roots:"+r1 + ","+r2);
  21. }
  22. catch (Exception e)
  23. {}
  24.  
  25. }
  26. }