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1997年全国高考数学理科第（24）题，是一道综合性较强的压轴题，此题考生的得分率极低：得0、1、2分占绝大多数；极少学生得满分（12分）．其根本原因恐怕还是基本知识、基本方法没有真正掌握或掌握得不牢（不熟练）．事实上，用二次函数及方程根与因式分解的关系的知识，便易
The (24) question in the 1997 National Mathematics for Mathematics in the National College Entrance Examination was a comprehensive and strong final axis question. The candidate’s score rate was very low: 0, 1, and 2 scores accounted for the vast majority; very few students had the perfect score (12). Minute). I am afraid that the basic reason is that the basic knowledge, the basic method is not really mastered or mastered (inexpertly). In fact, with the knowledge of the quadratic function and the relationship between the root and the factorization of the equation, it is easy to