有这样一道题:计算(x²-2x+1/x²-1)÷(x-1/x²+x)-8的值,其中x=2012."马虎同学把“x=2012”错抄成“x=2021”,但计算结果也正确.你说这是怎么回事?
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/15 13:28:00
![有这样一道题:计算(x²-2x+1/x²-1)÷(x-1/x²+x)-8的值,其中x=2012.](/uploads/image/z/2484275-59-5.jpg?t=%E6%9C%89%E8%BF%99%E6%A0%B7%E4%B8%80%E9%81%93%E9%A2%98%3A%E8%AE%A1%E7%AE%97%28x%26%23178%3B-2x%2B1%2Fx%26%23178%3B-1%29%C3%B7%28x-1%2Fx%26%23178%3B%2Bx%29-8%E7%9A%84%E5%80%BC%2C%E5%85%B6%E4%B8%ADx%3D2012.%22%E9%A9%AC%E8%99%8E%E5%90%8C%E5%AD%A6%E6%8A%8A%E2%80%9Cx%3D2012%E2%80%9D%E9%94%99%E6%8A%84%E6%88%90%E2%80%9Cx%3D2021%E2%80%9D%2C%E4%BD%86%E8%AE%A1%E7%AE%97%E7%BB%93%E6%9E%9C%E4%B9%9F%E6%AD%A3%E7%A1%AE.%E4%BD%A0%E8%AF%B4%E8%BF%99%E6%98%AF%E6%80%8E%E4%B9%88%E5%9B%9E%E4%BA%8B%3F)
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