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一元二次方程是初中数学课程的重要内容.它的应用很广泛,某些问题通过构造方程求解,可收到化繁为简、化难为易,起到事半功倍的作用.兹将构建方程的技巧分类试析如下.一、借助根的定义构造方程当题中含有形如am2+bm+c=0和an2+bn+c=0
The quadratic equation is an important part of the mathematics curriculum in junior middle school and its application is very broad. Some problems can be solved by constructing equations, which can help to reduce the complexity and ease the problem. Assortment analysis as follows. First, with the definition of the root structure of the problem when the problem contains the form such as am2 + bm + c = 0 and an2 + bn + c = 0