According to the accounting school's inquiry, the square of X is the square of X, which means X times itself. In mathematics, square is a basic operation, which means that a number is multiplied by itself. Square can also be understood as the "area" of a number. For example, the area of a square is the square of its side length. For any real number X, the square of X is equal to X times itself, and the result is the square of X. This operation is widely used in algebra. It can be used not only to calculate numerical values, but also to solve some algebraic problems.