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在中学代数教材中,有不少方程在通常解法下会出现增根或失根,为什么出现增根或失根?怎样正确地除去增根和找回失根?这些问题常使学生和一些新从事教学工作的教师感到困惑。本文试以方程的同解
In middle school algebra textbooks, there are many equations that appear to increase roots or lose roots under normal solutions. Why do rooting or root loss occur? How to correctly remove rooting and rooting? These problems often cause students and some new Teachers engaged in teaching work are confused. This paper tries to use the same solution