To express x to the power of 3, you simply write it as x³. This notation indicates that x is being multiplied by itself three times. In other words, it represents the product:
x³ = x × x × x
In algebra, expressing a variable to a power is a common practice that allows for concise representation of large multiplications. This is particularly useful in equations and polynomial expressions where variables are raised to different powers. Understanding how to express powers is fundamental to working in algebra and higher mathematics.