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一元二次方程是初中数学的一个重要知识点,而且有关一元二次方程的问题也是中考频考的重点和热点,虽然这部分内容并不复杂,但再简单的内容经过推敲也能产生精彩的火花,下面我们举例欣赏,希望能给同学们的学习带来些许启发.片段一解一元二次方程的新方法例1解方程15x~2-14x-8=0.分析:看到这个一元二次方程,搜索一元二次方程的解法,很容易想到使用公式法求解.那么除此
A quadratic equation is an important point of knowledge of mathematics in junior high school, and the problem of the quadratic equation is also the focus and hotspot of the entrance examination frequency test, although this part is not complicated, but simple content can also produce wonderful after deliberation Spark, the following example we appreciate, hoping to give students a little inspiration to learn. Fragment solution to a quadratic equation of the new method Example 1 solution equation 15x ~ 2-14x-8 = 0. Analysis: see this one yuan Sub-equation, search solution of one quadratic equation, it is easy to think of using the formula to solve.