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分类: 作业答案 • 2021-12-28 11:23:52

问题描述：

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2、观察下列各式
1×7+9=16=4
2×8+9=25=5
3×9+9=36=6
4×10+9=7
…
你发现其中有什么规律?请你将发现的规律用字母N（自然数）的公式表示出来,并说明理由.
一定要写出理由
结果是平方

答

答：N[N+6]+9=[N+3]^2
1,2,.3,4...是一个自然数列
7,8,9,10是一个以7为首项,1为公差的等差数列
4,5,6...是一个以4为首项,1为公差的等差数列
等差数列公式:首相a1,公差d,则第N项是aN=a1+{N-1}d

英语翻译Coenzyme Q10,or CoQ10 is a vitamin-like compound also called ubiquinone.It is an essential component of cells and utilized by the mitochondria in the normol process of energy production for cells.It is found in highest concentration in cells of the heart,liver,kidney and pancreas.CoQ10 can also act as a potent antioxidant to help prevent cellular damage from free radicals.
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I Don't You want that.You known't me!
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根号下m²/25n³ 化简
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