一说到检验,大家往往会想到解分式方程,因为解分式方程时会产生增根,增根使原方程无意义,故应通过检验把它排除掉.而解一元二次方程有时也要检验的.这里说的检验不是狭义上根据方程的解去检验,而是根据题目中的实际情况去检查、验证,从而将不符合题意的解排除.以下分情况举例说明.一、检验解题过程是否符合解法的要求 When it comes to the test, we often think of solution equations, because the solution equation will produce roots, root causes the original equation meaningless, so it should be excluded by inspection. And sometimes a quadratic equation solution To test the test here is not based on the interpretation of the equation in the narrow sense of the test, but according to the actual situation in the subject to check, verify, and thus will not meet the problem solution excluded. Whether the problem solving process meets the requirements of solution