package My;

import java.util.Scanner;
public class Example2_7 
{
	public static void main(String args[])
	{
		Scanner scan=new Scanner(System.in);
		System.out.println("请输入方程的系数a，b，c(要求b*b-4*a*c>0)");
		double a=scan.nextDouble();
		double b=scan.nextDouble();
		double c=scan.nextDouble();
		double p,q,delta=b*b-4*a*c;		
		p=-b/(2*a);		
		q=Math.sqrt(delta)/(2*a);
		double x1=p+q;
		double x2=p-q;
		System.out.println("x1="+x1);
		System.out.println("x2="+x2);		
	}
}
