一元二次方程是初中代数学习重点中考热点.涉及到的内容多、结论多、解题思路多.学生做起作业来,因种种原因,往往出现各种各样的错误,现就常见错误举例剖析如下:1概念不清造成的错误例1下列方程中,肯定是一元二次方程的是()A.ax2+bx+c=0B.3x2-2x-1=mx2C.x+1x=1D.(a2+1)x2-2x-3= The one-level quadratic equation is the focus of the junior high school algebra learning focus exam. It involves many topics, many conclusions, and many problem-solving ideas. Students start their homework. For various reasons, various errors often occur. Anatomy is as follows: 1 The error caused by the unclear concept Example 1 In the following equation, it is definitely a quadratic equation: () A.ax2+bx+c=0B.3x2-2x-1=mx2C.x+1x=1D. (a2+1)x2-2x-3=