The most basic definition of power is: let a be a certain number, n be a positive integer, and the n power of a is expressed as a? That represents the result of n times multiplication, such as 2? =2×2×2×2= 16。 The definition of power can also be extended to zero power and negative power and so on.

When inputting mathematical formulas on the computer, because it is inconvenient to input the power, the symbol ""is often used to represent the power. For example, the fifth power of 2 is usually expressed as 2 5.

Extended data

Algorithm of exponent:

1, [a m] × [a n] = a (m+n) is the same as the base power, the base number is constant, and the exponents are added.

2.[a m]⊙[a n]= a(m-n) Divide by the power with the same base, and subtract the exponent with the same base.

3. [a m] n = the power of a (Mn), the cardinality is unchanged, exponential multiplication?

4. The power of the product of [ab] m = (a m) × (a m) is equal to the power of each factor, and then multiplied by the obtained power.