Hello can you help me with the following question:Find the sum

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asked Apr 1, 2023 92.5k views

5 votes

Hello can you help me with the following question:Find the sum

Mathematics
college

Rockbot asked

by Rockbot

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$\begin{gathered} \text{Given} \\ \sum_(i=2)^4k(k-11) \end{gathered}$
$\begin{gathered} \operatorname{\sum}_(\imaginaryI=2)^4^k(k-11) \\ =2(2-11)+3(3-11)+4(4-11) \\ =2(-9)+3(-8)+4(-7) \\ =-18-24-28 \\ =-70 \end{gathered}$

Therefore

$\sum_(i=2)^4k(k-11)=-70$

Xring answered Apr 5, 2023

by Xring

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