The operation of finding the product of n identical factors is called power, and the result of power is called power. Where a is called base (base? Number), n is called exponent. When a. When it is regarded as the result of the n power of a, it can also be read as "the n power of a" or "the n power of a". A number can be regarded as its own power, and the index 1 is usually omitted.
Put parentheses when writing fractions and negative numbers to the nth power. Four operation sequences: first power, then brackets (first brackets, then middle brackets, finally braces), then multiplication and division, and finally addition and subtraction.
Multiply and divide the power with the same base, the original base is the base, and the sum or difference of indexes is the index.
Power, constant radix, exponential multiplication.
Product multiplication, first multiply each factor in the product separately, and then multiply the obtained power.
(1) Even powers of negative numbers are positive numbers, and odd powers of negative numbers are negative numbers.
(2) Any degree of a positive number is a positive number.
(3) Any positive power of 0 is 0.