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运用换元法分解因式,不但能将问题简单化,而且能使同学们的思路得到拓宽,解题技巧得到提高.本文以近年来部分省市的数学竞赛题为例,分类介绍几种富有技巧性的换元法,供同
The use of the substitution method to factorize the factors not only simplifies the problem, but also broadens the students’ ideas and improves the problem-solving skills. This article takes the mathematical contests of some provinces and cities in recent years as an example to introduce several types of wealth. Skilled replacement method for the same