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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1直接开平方法和因式分解法（第2课时）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,从上述解法中，你能找到解此类方程的方法吗？,归纳：,利用因式分解使方程化为两个一次因式乘积等于0的形式，再使这两个一次因式分别等于0，从而实现降次.这种解法叫做因式分解法.,

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