因式分解是代数式恒等变形的基本形式之一,是帮助我们解决许多数学问题的有力工具.因式分解方法灵活,技巧性强,学习这些方法与技巧能够帮助同学们开拓思维,提升解题能力.分组分解法是因式分解的重要方法,许多多项式经过适当的分组后,便可用提公因式法或公式法进行进一步分解. Factorization is one of the basic forms of algebraic constant deformation and is a powerful tool to help us solve many mathematical problems. Factorization method is flexible and skillful. Learning these methods and skills can help students to develop their thinking and enhance their problem solving Ability.Group decomposition is an important factor of factorization, after many polynomials are properly grouped, we can use the public factor method or the formula method for further decomposition.