Quadratic Equation

import java.text.DecimalFormat;
import java.util.Scanner;

public class ExerciseFive {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String inputOne = scanner.nextLine();
        double a = Double.parseDouble(inputOne);

        String inputTwo = scanner.nextLine();
        double b = Double.parseDouble(inputTwo);

        String inputThree = scanner.nextLine();
        double c = Double.parseDouble(inputThree);

        double d = b * b - 4 * a * c;
        double x1 = (-b - Math.sqrt(d)) / (2 * a);
        double x2 = (-b + Math.sqrt(d)) / (2 * a);

        DecimalFormat format = new DecimalFormat("0.#");
        System.out.println("x1 = " + format.format(x1) + "; x2 = " + format.format(x2));

    }
}