Find the Sum Using the Formulas for the Sums of Powers

question 58

Multiple Choice

Find the sum using the formulas for the sums of powers of integers. $$\sum _ { n = 1 } ^ { 8 } \left( 7 n - 3 n ^ { 2 } \right)$$

• A)-224
• B)-1080
• C)-136
• D)144
• E)-360

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