We know that difference between two Numbers is obtained by subtracting one number from another. This subtraction is shown by the ‘-’ symbol. If A and B are two numbers then A – B is known as difference. Sum of the two numbers A and B is given by the addition of two numbers. Symbol ‘+’ is used to show the addition. Mathematically it is represented as A + B. Term Square refers to two times multiplication of the given number by itself. That is the square of the number A is A * A. It is also represented as (A) 2.
Product of two numbers is given by simply multiplying two numbers that is if A and B are two numbers then their product will be (A * B).

Example:
If the difference between two no is 9 and the product of the two is 14, what is the square of their sum?
Solution: Let’s take two numbers - 7 and 2. Difference of these two numbers is 9. Mathematically, it can be shown as, if A = 7 and B = 2 then difference will be 7 – (- 2) = 9 and their product will be 14 that is
(7 * (- 2)) = - 14,

Now sum of these two numbers will be given by following formula:
A + B = 7 + (-2) = 7 – 2 = 5,
Square of sum of given number will be given as:
[7 + (-2)] 2 = (7 – 2) 2 = (5) 2 = 5 * 5 = 25. Thus final answer will be 25 (square of sum of given numbers) for those numbers whose difference is equals to 9 and whose product is equals to – 14.