To express x to the power of 2, we simply write it as x². This notation means that x is multiplied by itself, so it represents the operation of squaring the variable x.
For example, if x is 3, then x² would be 3 × 3, which equals 9. In general, the expression x² can be used in various mathematical contexts, such as algebra, geometry, and calculus. It’s a fundamental concept that helps in understanding quadratic functions and equations.