在初中数学中,因式分解是关键的知识点之一.因式分解对以后的数学学习将起重要的作用.在课本中,主要讲解了四种分解的方法,其中对提公因式法、公式法和十字相乘法介绍得较详细,这里不再赘述.下面对分组分解法和其他的方法进行一些介绍.一、分组分解因式的常用方法1.按公因式分组 In junior middle school mathematics, factorization is one of the key knowledge points.Functional factorization will play an important role in the future of mathematics learning.In the textbook, it mainly explains four kinds of decomposition methods, of which the public factor method , The formula method and the cross multiplication method described in more detail, not repeat them here. The following group decomposition method and other methods to introduce some of the common method of group factorization factor 1. According to the common cause grouping