分解因式在中学数学里有重要地位,分组分解法是分解因式的一个难点。怎么突破这一难点,值得我们深入地探讨。笔者认为,凡是一种经常应用而又自成系统的重要方法,在可能条件下,应尽早地比较完整地向学生介绍。当然,一种数学方法,并不是孤立的,它常常与其它方法联系在一起。 The factorization factor plays an important role in middle school mathematics. The group decomposition method is a difficult factor to factorize. How to break through this difficulty is worth exploring in depth. The author believes that all important methods that are often applied and self-contained are, as far as possible, introduced to students as soon as possible. Of course, a mathematical method is not isolated, it is often associated with other methods.