Square (exponent is a power of 2)
Square is an operation. For example, the square of a means a×a, and the abbreviation is a? , or it can be written as a× a (a (the first power of a times the first power of a equals the second power of a). Pronunciation: píng fāng, recorded as:? , such as x? . Note: you can use ""instead on the computer, for example, X 2 is X? the meaning of