Generally speaking, in mathematics, we write the product of multiplying n identical factors a as an n [1]. This operation of finding the product of several identical factors is called power, and the result of power is called power. In n, a is called the base and n is called the exponent. N is pronounced "a to the n power" or "a to the n power".

A number can be regarded as the first power of the number itself. For example, 5 is 5 1, and the index 1 is usually omitted. Quadratic is also called square, for example, 5 2 is usually pronounced as "the square of 5"; Cubes are also called cubes. For example, 5 3 can be read as "5 cubes".

When the base of a power is a fraction or a negative number, the base should be bracketed.

Mixed operation

Multiplication and division power mixed operation, first calculate the power, then calculate the multiplication and division; If you encounter parentheses, do the operation in parentheses first.