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一、课标解读如已学习过的一元一次方程、二元一次方程组一样,一元二次方程也可以表达许多实际问题中的数量关系,它是分析和解决许多实际问题的重要的数学模型之一.一元二次方程的学习是一元一次方程、方程组的延续和深化,也是二次函数等知识的基础.同时也是高中一元二次不等式的预备知识.对一元二次方程的解法,课标要求是了解一元二次方程及其相关概念,理解一元二次方程解法的基本思想及其与一元一次方程的联系,体会两者之间相互比较和转化的思想方法.理
First, the standard interpretation Had been studied once a linear equation, the same as the binary system, a quadratic equation can also express the number of many practical problems in the relationship between quantitative analysis of many practical problems and it is an important mathematical model One yuan quadratic equation learning is a unitary equation, the continuation and deepening of equations, but also the basis of the quadratic function and other knowledge is also a high school one yuan quadratic inequality of the preparatory knowledge of the solution of a quadratic equation, the standard Requirements is to understand the quadratic equation and its related concepts, to understand the basic idea of a quadratic equation solution and its relationship with the primary equation, and understand the two methods of thinking and comparison between each other.