幕的三个运算性质是学习整式乘法的基础和依据，学习时要注意下面三个问题．一、理解并掌握幕的3个运算性质的归纳过程把底数由正整数扩充到任意数a，指数扩充到任意正整数m、n后，同底数幕的乘法性质的归纳如下：掌握了运算性质的归纳过程就能真正理解运算性质，用起来就不会? The three computational properties of the screen are the basis and basis for learning the multiplication of the whole formula. Attention should be paid to the following three issues when learning. I. Understand and master the induction process of the three computational properties of the screen. Expand the base from a positive integer to an arbitrary number a. After the exponent is extended to any positive integers m and n, the multiplicative properties of the same screen are summarized as follows: Master the nature of the operation The inductive process can really understand the nature of the operation. Will it not be used?