一元二次方程

解题思路:

注意事项:

参考代码:

import java.util.Scanner;

public class Main {

     public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        int a=scanner.nextInt();

        int b=scanner.nextInt();

        int c=scanner.nextInt();

        double he=b * b - 4 * a * c;

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

        double x2=(-b-Math.sqrt(he))/2*a;

        System.out.printf("%.2f %.2f",x1,x2);

    }

}