Question

evaluate, ∑(i^2-2i+1) i=1 n=4

Answer 1

this is the sum of the terms 1st term i =1 1^2 - 2x1 + 1
2nd term i = 2 2^2 - 2x2 +1
3rd term i = 3 3^2 - 2x3 +1
4th term i = 4 4^2 - 2x4 + 1

you need to evaluate each then add the answers

Answer 2

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