公差不为零的等差数列{an}的钱n项和为Sn,若(a4)的平方;=a3*a7,S8=32,求an及Sn(在线等 急 )
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![公差不为零的等差数列{an}的钱n项和为Sn,若(a4)的平方;=a3*a7,S8=32,求an及Sn(在线等 急 )](/uploads/image/z/8815514-50-4.jpg?t=%E5%85%AC%E5%B7%AE%E4%B8%8D%E4%B8%BA%E9%9B%B6%E7%9A%84%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%EF%BD%9Ban%EF%BD%9D%E7%9A%84%E9%92%B1n%E9%A1%B9%E5%92%8C%E4%B8%BASn%2C%E8%8B%A5%EF%BC%88a4%EF%BC%89%E7%9A%84%E5%B9%B3%E6%96%B9%3B%3Da3%2Aa7%2CS8%3D32%2C%E6%B1%82an%E5%8F%8ASn%EF%BC%88%E5%9C%A8%E7%BA%BF%E7%AD%89+%E6%80%A5+%EF%BC%89)
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