Find the sum.
-$\sum _ { i = 2 } ^ { 5 } \left( i ^ { 2 } - 5 \right)$
A) 40
B) 14
C) 34
D) 54

Name: Find the sum. -$\sum _ { i = 2 } ^ { 5 } \left( i ^ { 2 } - 5 \right)$ A) 40 B) 14 C) 34 D) 54
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Question

Quizplus · Accepted Answer

\begin{align*}
\sum _ { i = 2 } ^ { 5 } \left( i ^ { 2 } - 5 ight) &= (2^2-5) + (3^2-5) + (4^2-5) + (5^2-5) \
&= (4-5)+(9-5)+(16-5)+(25-5) \
&= 34
\end{align*}

Therefore, the answer is Choice C.

Find the Sum ∑i=25(i2−5)\sum _ { i = 2 } ^ { 5 } \left( i ^ { 2 } - 5 \right)∑i=25​(i2−5)

Find the Sum $\sum _ { i = 2 } ^ { 5 } \left( i ^ { 2 } - 5 \right)$