Question

Evaluate.

how can we put this in wolfram?

Answer 1

sum from n =2 to 8 (n-5) try this might work

Answer 2

http://www.wolframalpha.com/input/?i=sum+of+-%28n-5%29+from+2+to+8+

Answer 3

what would be the solution for this?

Answer 4

-(2-5)+(-(3-5))+...+(-(8-5))

Answer 5

or you can do like arithmetic series

Answer 6

ok