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Express the Following Sum in Closed Form (Without Using a Summation

Question 16

Essay

Express the following sum in closed form (without using a summation symbol and without using an ellipsis . . . ): ∑k=0n(nk)7k\sum _ { k = 0 } ^ { n } \left( \begin{array} { l } n \\k\end{array} \right) 7 ^ { k }

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Let blured image be an integer with blured image. Then
\[\begin{ ...

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