Java Program to Compute (a+b+c)(b+c-a)(c+a-b)(a+b-c) where Value of a, b, and c are Given

In the previous article we have discussed Java Program to Compute (b+c)(c+a)(a+b) where Value of a, b and c are Given

In this program we are going to see how to compute (a+b+c)(b+c-a)(c+a-b)(a+b-c) where value of a, b, and c are given by using Java Programming language.

Java Program to Compute (a+b+c)(b+c-a)(c+a-b)(a+b-c) where Value of a, b, and c are Given

The formula of (a+b+c)(b+c-a)(c+a-b)(a+b-c) is given below.

(a+b+c)(b+c-a)(c+a-b)(a+b-c) = 2a²b² + 2b²c² + 2c²a² – a⁴ – b⁴ – c⁴

Now we will convert this into a valid Java expression.

Let x= (a+b+c)(b+c-a)(c+a-b)(a+b-c)

= 2a²b² + 2b²c² + 2c²a² – a⁴ – b⁴ – c⁴

= (2*a*a*b*b)+( 2*b*b*c*c)+( 2*c*c*a*a)-(a*a*a*a)-(b*b*b*b)-(c*c*c*c)

Or, (2*Math.pow(a,2)* Math.pow(b,2)) + (2*Math.pow(b,2)* Math.pow(c,2)) ₊(2*Math.pow(c,2)* Math.pow(a,2)) – (Math.pow(a,4)) – (Math.pow(b,4)) – (Math.pow(c,4))

Example:

Suppose a=4, b=2 and c= 3, Then

(a+b+c)(b+c-a)(c+a-b)(a+b-c)
= (2*a*a*b*b)+( 2*b*b*c*c)+( 2*c*c*a*a)-(a*a*a*a)-(b*b*b*b)-(c*c*c*c)
= (2*4*4*2*2)+( 2*2*2*3*3)+( 2*3*3*4*4)-(4*4*4*4)-(2*2*2*2)-(3*3*3*3)
= 135

Now let’s see different ways to compute (a+b+c)(b+c-a)(c+a-b)(a+b-c)

By Using Static Input Value
By Using User Input Value
By Using User Defined Method

Method-1: Java Program to Compute (a+b+c)(b+c-a)(c+a-b)(a+b-c) where Value of a, b, and c are Given By Using Static Input Value

Approach:

Declare and initialize two integer variables say a, b, and c.
By using the formula compute (a+b+c)(b+c-a)(c+a-b)(a+b-c)
Print the result.

Program:

class Main
{
    public static void main(String[] args)
    {
        //declare the first integer variable with a integer value
        int a= 4;
        System.out.println("a= " +a);
        //declare the second integer variable with a integer value
        int b= 2;
        System.out.println("b= "+b);
        //declare the second integer variable with a integer value
        int c= 3;
        System.out.println("c= "+c);
        //declare another integer variable and assigned the formulated value to it.
        int d= (2*a*a*b*b)+( 2*b*b*c*c)+( 2*c*c*a*a)-(a*a*a*a)-(b*b*b*b)-(c*c*c*c);
        System.out.println("(a+b+c)(b+c-a)(c+a-b)(a+b-c)= "+d);
    }
}

Output:

a= 4
b= 2
c= 3
(a+b+c)(b+c-a)(c+a-b)(a+b-c)= 135

Method-2: Java Program to Compute (a+b+c)(b+c-a)(c+a-b)(a+b-c) where Value of a, b, and c are Given y Using User Input Value and Pow()

Approach:

Declare three integer variables say a, b, and c.
Take the value of a, b, and c as user input by using Scanner class.
Then By using the formula compute (a+b+c)(b+c-a)(c+a-b)(a+b-c)
Print the result.

Program:

import java.lang.Math;
import java.util.Scanner;
class Main
{
    public static void main(String[] args)
    {
        //create object of scanner class.
        Scanner sc=new Scanner(System.in);
        System.out.print("a= ");
        //Take the first input from the user.
        int a= sc.nextInt();
        System.out.print("b= ");
        //Take the second input from the user.
        int b= sc.nextInt();
        System.out.print("c= ");
        //Take the first input from the user.
        int c= sc.nextInt();
        //declare another integer variable and assigned the formulated value to it.
        double d= (2*Math.pow(a,2)* Math.pow(b,2)) + (2*Math.pow(b,2)* Math.pow(c,2)) +   (2*Math.pow(c,2)* Math.pow(a,2)) - (Math.pow(a,4)) - (Math.pow(b,4)) - (Math.pow(c,4));
        System.out.println("(a+b+c)(b+c-a)(c+a-b)(a+b-c)= "+(int)d);
    }
}

Output:

a= 34
b= 45
c= 56
(a+b+c)(b+c-a)(c+a-b)(a+b-c)= 9361575

Method-3: Java Program to Compute (a+b+c)(b+c-a)(c+a-b)(a+b-c) where Value of a, b, and c are Given By Using User Defined Method

Approach:

Declare two integer variables say a, b, and c
Take the value of a, b, and c as user input by using Scanner class.
Then call a user defined method say computeValue() and pass a, b, and c as parameter.
Then inside method by using the formula compute (a+b+c)(b+c-a)(c+a-b)(a+b-c)
Print the result.

Program:

import java.util.Scanner;
class Main
{
    public static void main(String[] args)
    {
        //create object of scanner class.
        Scanner sc=new Scanner(System.in);
        System.out.print("a= ");
        //Take the first input from the user.
        int a= sc.nextInt();
        System.out.print("b= ");
        //Take the second input from the user.
        int b= sc.nextInt();
        System.out.print("c= ");
        //Take the first input from the user.
        int c= sc.nextInt();
        //call the function
        computeValue(a,b,c);
    }
    
    //define the method
    public static void computeValue(int a, int b,int c)
    {
        //declare another integer variable and assigned the formulated value to it.
        int d= (2*a*a*b*b)+( 2*b*b*c*c)+( 2*c*c*a*a)-(a*a*a*a)-(b*b*b*b)-(c*c*c*c);
        System.out.println("(a+b+c)(b+c-a)(c+a-b)(a+b-c)= "+d);
    }
}

Output:

a= 12
b= 34
c= 32
(a+b+c)(b+c-a)(c+a-b)(a+b-c)= 589680

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