因式分解是初中数学中一种重要的恒等变形,是后续学习分式、方程及不等式等许多知识的重要工具.但是,同学们做此类题时常出现错误.为尽可能地避免错误的发生,现将常见错解问题列举如下,以便引起同学们的注意. Factorization is an important isomorphic variant in junior high school mathematics. It is an important tool for many subsequent knowledge of fractions, equations, inequalities, etc. However, students often make mistakes when doing such problems. To avoid mistakes as much as possible Occurrence, now common misconceptions are listed as follows in order to arouse the attention of the students.