多项式的“因式分解”(《代数》第二册第七章),是在学习了有理数和整式四则运算后进行教学的,它是中学代数课程中的一种重要的恒等变形,在以后学习分式的化简、解方程、三角函数式的变形中,都有着广泛的应用。本章的教学目的是:1.使学生理解因式分解的意义及其与整式乘法的关系;2.使学生熟练掌握因式分解的四种基本方法 Polynomial “Factorization ” (“Algebra” Volume II, Chapter VII), after learning the rationale and the whole four arithmetic teaching, it is a kind of important equal deformation in the algebra course of high school, In the future to learn the reduction of the formula, solving equations, trigonometric function of the deformation, has a wide range of applications. The purpose of this chapter's teaching is to: 1. To enable students to understand the meaning of factorization and its relationship with integer multiplication; 2. To enable students to master the four basic methods of factorization