x的三次方-3x-2=0x²-x-2怎么变成(x-2)( x+1)顺便问一下,解里怎么判断是x1=x2还是x2=x3是看有平分的那个括号在前在后吗
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/18 12:30:51
![x的三次方-3x-2=0x²-x-2怎么变成(x-2)( x+1)顺便问一下,解里怎么判断是x1=x2还是x2=x3是看有平分的那个括号在前在后吗](/uploads/image/z/13415922-18-2.jpg?t=x%E7%9A%84%E4%B8%89%E6%AC%A1%E6%96%B9-3x-2%3D0x%26%23178%3B-x-2%E6%80%8E%E4%B9%88%E5%8F%98%E6%88%90%EF%BC%88x-2%EF%BC%89%EF%BC%88+x%2B1%EF%BC%89%E9%A1%BA%E4%BE%BF%E9%97%AE%E4%B8%80%E4%B8%8B%2C%E8%A7%A3%E9%87%8C%E6%80%8E%E4%B9%88%E5%88%A4%E6%96%AD%E6%98%AFx1%3Dx2%E8%BF%98%E6%98%AFx2%3Dx3%E6%98%AF%E7%9C%8B%E6%9C%89%E5%B9%B3%E5%88%86%E7%9A%84%E9%82%A3%E4%B8%AA%E6%8B%AC%E5%8F%B7%E5%9C%A8%E5%89%8D%E5%9C%A8%E5%90%8E%E5%90%97)
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