Решить по информатике. 4 вариант. карты карно.

package testStudentCode;

//import java.util.Arrays;

import java.util.Scanner;

public class TestStudentCode {

public static void main(String[] args) {

/* This reads the input provided by user

        * using keyboard

        */

       Scanner scan = new Scanner(System.in);

       System.out.print("a = ?");

       // This method reads the number provided using keyboard

       double a = scan.nextDouble();

       System.out.print("b = ?");

       double b = scan.nextDouble();

       // Closing Scanner after the use

       scan.close();

       System.out.println(a + "x + (" + b + ") = 0");  

       if (a == 0) {

        System.out.println("a = 0");

       } else {

           double x = - b / a;

        System.out.println("x = " + x);

       }

}

}

Объяснение:

как то так

package testStudentCode;

//import java.util.Arrays;

import java.util.Scanner;

public class TestStudentCode {

public static void main(String[] args) {

/* This reads the input provided by user

        * using keyboard

        */

       Scanner scan = new Scanner(System.in);

       System.out.print("a = ?");

       // This method reads the number provided using keyboard

       double a = scan.nextDouble();

       System.out.print("b = ?");

       double b = scan.nextDouble();

       // Closing Scanner after the use

       scan.close();

       System.out.println(a + "x + (" + b + ") = 0");  

       if (a == 0) {

        System.out.println("a = 0");

       } else {

           double x = - b / a;

        System.out.println("x = " + x);

       }

}

}

Объяснение:

как то так