0代数式是代数中一个非常重要的概念,它贯穿于初中代数的始终,也是学习整式、分式、方程、函数等知识的基础.学好代数式,需要u0016熳⒁庖韵录父龇矫娴奈侍?一、了解代数式的特征1·代数式是用运算符号把数和表示数的字母连结而成的.如:3a,a+b等.2·单独一个数或一个字母也是代数式. The 0 algebraic formula is a very important concept in algebra. It runs through the algebra of junior high school and is the basis for learning knowledge of integers, fractions, equations, and functions. Learning algebraic expressions requires the use of u0016 (14). Waiting? 1. To understand the characteristics of algebraic expressions 1. Algebraic expressions use arithmetic operators to combine numbers with letters representing numbers. For example: 3a, a+b, etc. 2. A single number or letter is algebraic.