《整式的乘除》一章向同学们介绍了幂的四个运算性质:am·an=am+n;(am)n=amn;(ab)n=an·bn(三个性质中m、n都是正整数)am÷an=am-n(n≠0,m、n都是正整数,且,m>n)幂的运算性质是进行整式乘除的基础,它不仅可以正向运用,有时逆向运用于解题,往往能化繁为简,化难为易. The chapter “Multiplication and Division of Whole Formulas” introduces the students to the power of four operations: am · an = am + n; (am) n = amn; (ab) n = an · bn (m, n in three properties Both are positive integers.) The operation property of am÷an=am-n(n≠0, m and n are both positive integers, and m>n) is the basis for the multiplication and division of integers. It can be used not only in the forward direction but also in the reverse direction. In solving problems, they can often be simplified and simplified.