《整式的乘除与因式分解》一章属于初中数学的“数与代数”部分,是从数字运算到字母运算的过渡内容,也是代数式恒等变形的基础知识.在学习时,我们会发现本章有公式法则多、计算题目多、变化技巧多等特点.比如,本章有同底数幂乘法、同底数幂除法、幂的乘方、积的乘方、单项式乘以单项式、单项式乘以多项式、多项式乘以多项式、多项式除以单项式等法则,还有平方差公式、完全平方公式等.同学们要注意在理解的基础上,记准各个公式、法则的结构和 The chapter “Multiply and Divide by Neatness and Factorization” belongs to the “Number and Algebra” part of the maths of junior high school, which is the transitional content from the number operation to the letter operation, and also the basic knowledge of algebraic identity transformation. For example, this chapter has the same base multiplication, the same power division, the power of the square, the power of the product, monomial by monomial, monomial by polynomial , Polynomials multiply polynomials, polynomials divided by monomials and other rules, as well as the square deviation formula, the complete square formula, etc. Students should pay attention to understanding, based on the recording of the various formulas, the structure of the law and