（一）整式的有关概念与运算一、知识要点本单元的知识要点和学习要求是：了解有关整式的概念，掌握它的性质和运算法则，熟练地进行整式的运算．1．单项式只含有对数和字母的乘法运算的代数式叫做单项式．单项式中的数字因数叫做这个单项式的系数．所有字母的指数的和叫做这个 (1) The related concepts and operations of the whole formula 1. Knowledge points The main points of knowledge and learning requirements of this unit are: to understand the concept of the whole formula, to grasp its nature and algorithm, and to perform the whole formula operation skillfully. 1. An algebraic expression in which the monomial contains only the multiplication of the logarithms and letters is called the monomial. The digital factor in the monomial is called the coefficient of this monomial. The sum of the indices of all letters is called this