拿到一个因式分解题目，应该怎样思考其解法呢？解题的一般思考方法是：1．首先看多项式的各项是否有公因式可提取？若有，应先提取公因式．2．然后看是否可用公式法或十字相乘法分解因式．3．若上述方法都不能奏效，则应考虑用分组分解法分解困式．例1分解困式：（）4。’－24 To get a factorization problem, how should one think about its solution? The general thinking methods for problem solving are: 1. First of all, do you see whether the polynomials can be extracted by common factors? If yes, the common factor should be extracted first. 2. Then see if you can use the formula or cross multiplication to factorize. 3. If none of the above methods can work, then you should consider using the group decomposition method to break down the trapped type. Example 1 decomposition type: () 4. ’-twenty four