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幂的运算是整式乘除法的基础,常见幂的运算法则有:(1)同底数幂的乘法法则:am·an=am+n;(2)同底数幂的除法法则:am÷an=am-n;(3)幂的乘方法则:(am)n=amn;(4)积的乘方法则:(ab)m=am·an.上述运算法则的顺向运用相对简单,课堂上学习的重点也是顺向运用,但幂的逆向运用往往是测试的重点与难点.此文例析幂的逆运
The arithmetic of power is the basis of integer multiplication and division. The arithmetic of common power is as follows: (1) The law of multiplication at the same power: am · an = am + n; (2) The division law of the same power: am ÷ an = am -n; (3) The power of the multiplication method: (am) n = amn; (4) The product of the multiplication method: (ab) m = am · an. The above algorithm is relatively simple to use, The focus is also forward use, but the reverse use of power is often the test of the key and difficult.This paper analyzes the power of the inverse