列一元二次方程解应用题的一般步骤可概括为“审、设、找、列、解、答”六步。(1)审:通过审题,把实际问题抽象成数学问题,明确哪些是已知数,哪些是未知数;(2)设:用字母表示题目中的一个未知量,有直接设未知数和间接设未知数两种方法; The general steps of solving a quadratic equation solution column can be summarized as six steps: “review, design, find, list, solution and answer”. (1) Trial: Through trial examinations, the practical problems are abstracted into mathematical problems, which are known and which are unknown; (2) Let: Let an alphabetical representation of an unknown quantity have direct unknowns and indirect unknowns Two methods