我们知道,解分式方程和无理方程都可能产生增根,因此,在解这两种方程时都必须验根.那么解整式方程组是否会产生增解呢?笔者发现,解某些由一个二元一次和一个二元二次方程所组成的方程组时会产生增解.现行“课本”中出现了这个“问题”而又没有对其进行分析.下面举例说明,希望引起同学们的注意. We know that both the fractional equation and the irrational equation may produce rooting. Therefore, we must verify the roots when we solve the two equations. Then does the solution equation produce a solution? The author finds that the solution consists of one When the system of equations composed of binary one and a binary quadratic equation is accompanied by a solution, this “problem” appears in the current “textbook” without analyzing it. The following examples illustrate the hope of attracting the attention of the students. .