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列一元二次方程解应用题不仅在初中代数中具有举足轻重的作用,而且在工作、生活中遇到的许多实际问题也可以运用它来解决。列一元二次方程解应用题需要做到:(1)审题,只有通读全题,理解题意,才能确定所给已知量和所求未知量间的等量关系,因此学会审题是关键;(2)设元,即找出最有效的解决问题的未知量,将其设为未知数;(3)列方程,即根据题目中的要求列出含有未知数的等式(方程);(4)解方
Column quadratic equation solution problem not only in junior high school algebra plays a decisive role, and in the work, life encountered many practical problems can also be used to solve it. Column one quadratic equation solution to the problem need to be done: (1) exam questions, only read through the whole question, understand the questions, in order to determine the given amount of the given amount and the unknown amount of the relationship between the amount, so learn the trial is the key; (2) Let Yuan, that is, find out the most effective problem-solving unknowns and set it as unknown; (3) Column equations, that is, equations (equations) containing unknowns are listed according to the requirements in the title; (4) Solution square