Evaluate the Sum $$\sum _ { k = 3 } ^ { 6 } \frac { \left( k ^ { 2 } - 2 \right) } { 2 }$$

question 570

Multiple Choice

Evaluate the sum. Round to two decimal places, if necessary.
- $$\sum _ { k = 3 } ^ { 6 } \frac { \left( k ^ { 2 } - 2 \right) } { 2 }$$

• A) 78
• B) 40
• C) 21
• D) 39

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