求用规律算出(1³+2³+3³+4³+5³+6³+7³+8³+9³)的结果
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/05 23:05:34
![求用规律算出(1³+2³+3³+4³+5³+6³+7³+8³+9³)的结果](/uploads/image/z/4040453-29-3.jpg?t=%E6%B1%82%E7%94%A8%E8%A7%84%E5%BE%8B%E7%AE%97%E5%87%BA%EF%BC%881%26%23179%3B%2B2%26%23179%3B%2B3%26%23179%3B%2B4%26%23179%3B%2B5%26%23179%3B%2B6%26%23179%3B%2B7%26%23179%3B%2B8%26%23179%3B%2B9%26%23179%3B%EF%BC%89%E7%9A%84%E7%BB%93%E6%9E%9C)
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求用规律算出(1³+2³+3³+4³+5³+6³+7³+8³+9³)的结果
求用规律算出(1³+2³+3³+4³+5³+6³+7³+8³+9³)的结果
求用规律算出(1³+2³+3³+4³+5³+6³+7³+8³+9³)的结果
1³=1²
1³+2³=9=(1+2)²
1³+2³+3³=36=(1+2+3)²
……
所以
1³+2³+3³+4³+5³+6³+7³+8³+9³
=(1+2+3+4+5+6+7+8+9)²
=45²
=2025