Find the sum for each series. $$\sum_{i=1}^{6}\left(2+i-i^{2}\right)$$
Added by Alberto J.
Step 1
Step 1: Plug in the values of i from 1 to 6 into the given expression: $$2+1-1^2 = 2$$ $$2+2-2^2 = 2$$ $$2+3-3^2 = 2$$ $$2+4-4^2 = -14$$ $$2+5-5^2 = -18$$ $$2+6-6^2 = -26$$ Show more…
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