分组分解法不是一种独立的分解因式的方法，它要求我们经过“适当分组”后转化为用已经学过的提取公因式法、运用公式法或十字相乘法来分解因式．但是，由于这种方法没有固定的模式，所以部分同学觉得难以驾驭，正因为如此，我们也只能面对具体问题作出可行性分析，而不能教给 The group decomposition method is not an independent factorization method. It requires us to go through the “appropriate grouping” and then transform it into an already-extracted public factor method, a formula method, or a cross-multiplication method. However, because this method does not have a fixed model, some classmates find it difficult to manage. Because of this, we can only analyze the feasibility of specific problems and we cannot teach them.