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九年级数学上册第22章一元二次方程22.2一元二次方程的解法2配方法授课课件（新版）华东师大版.ppt

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华师版九年级数学上册,对比这个方程与前面讨论过的方程x26x92，可以发现方程x26x92的左边是含有x的完全平方式，右边是非负数，可以直接降次解方程；而方程x26x160不具有上述形式，直接降次有困难，能设法把这个方程化为具有上述形式的方程吗？,解析：显然这两个方程的左边不是一个完全平方式，因此，要按前面的方法化为完全平方式.,

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