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因式分解是初中数学学习中重要的一种恒等变形，其特点是把和差化成积．对于某些问题，应用因式分解的方法，可把与和差有关的问题转化为乘积的形式．这样进行，能给解题带来方便．现以近年来的竞赛试题为例，介绍因式分解在解题中的应用．一、解计算问题二、解化简问题三、解
Factorization is an important kind of constant deformation in mathematics learning in junior high school. Its characteristic is that the difference is converted into a product. For some problems, applying the factorization method can transform the problems related to difference into the form of product. This will bring convenience to solving problems. Take the recent contest questions as an example to introduce the application of factorization in problem solving. I. Solving the problem 2. Solving the problem 3. Solving the problems