In junior high school mathematics, power refers to the result of power operation, which is the form of multiplying a number by a few. When n is a positive integer, m n can be expressed as n m, n m = nxnxnxn (m (m n)), and the result of taking n m as the power is called the m power of n .. where n is called the bottom and m is called the exponent. When m is a decimal, m can be written as a/b (where a and b are integers), n m means n a and b times the root sign.