Solved

Find the Sum Using the Formulas for the Sums of Powers

Question 195

Multiple Choice

Find the sum using the formulas for the sums of powers of integers. $\sum _ { i = 1 } ^ { 7 } \left( 5 i - 8 i ^ { 3 } \right)$

A) -784
B) -3,136
C) 4,200
D) 5,600
E) -6,132

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