A square product (or a perfect square) is a positive integer that is calculated by multiplying two identical numbers together. Essentially, the square product is the product of some number with itself, furthermore a square product is always a positive number. The number that is multiplied to itself to produce the square product is known as the square root.

e.g,

0 x 0 = 0

1 x 1 = 1

2 x 2 = 4

3 x 3 = 9

4 x 4 = 16

5 x 5 = 25