观察下面三行数:-3.9.-27.81.-243.-5.7.-29.79.-245.观察下面三行数:-3.9.-27.81.-243.-5.7.-29.79.-245.1.-3.9.-27.81.(1)第一行数按什么规律排列的?(2)第二,第三行数与第一行数分别有什么关系?(3)取每行
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![观察下面三行数:-3.9.-27.81.-243.-5.7.-29.79.-245.观察下面三行数:-3.9.-27.81.-243.-5.7.-29.79.-245.1.-3.9.-27.81.(1)第一行数按什么规律排列的?(2)第二,第三行数与第一行数分别有什么关系?(3)取每行](/uploads/image/z/555429-21-9.jpg?t=%E8%A7%82%E5%AF%9F%E4%B8%8B%E9%9D%A2%E4%B8%89%E8%A1%8C%E6%95%B0%3A-3.9.-27.81.-243.-5.7.-29.79.-245.%E8%A7%82%E5%AF%9F%E4%B8%8B%E9%9D%A2%E4%B8%89%E8%A1%8C%E6%95%B0%3A-3.9.-27.81.-243.-5.7.-29.79.-245.1.-3.9.-27.81.%EF%BC%881%EF%BC%89%E7%AC%AC%E4%B8%80%E8%A1%8C%E6%95%B0%E6%8C%89%E4%BB%80%E4%B9%88%E8%A7%84%E5%BE%8B%E6%8E%92%E5%88%97%E7%9A%84%3F%EF%BC%882%EF%BC%89%E7%AC%AC%E4%BA%8C%2C%E7%AC%AC%E4%B8%89%E8%A1%8C%E6%95%B0%E4%B8%8E%E7%AC%AC%E4%B8%80%E8%A1%8C%E6%95%B0%E5%88%86%E5%88%AB%E6%9C%89%E4%BB%80%E4%B9%88%E5%85%B3%E7%B3%BB%3F%EF%BC%883%EF%BC%89%E5%8F%96%E6%AF%8F%E8%A1%8C)
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