Question

Evaluate:

Answer 1

I know how to do it but I am not sure because it is a negative so would I still do it the same way?

Answer 2

\[\sum_{2}^{10} (-2n) - \sum_{2}^{10} 3\]

Answer 3

\[-\sum_{2}^{10} 2n - \sum_{2}^{10} 3\]

Answer 4

So wait give me a second to try it my self I got that it equals -135 :)

Answer 5

\[-2\sum_{2}^{10} n - \sum_{2}^{10} 3\]

Answer 6

-2(2+3+4.....+10) - (3+3+3......+3....8 times)

Answer 7

-2*54-27=-108-27=-135

Answer 8

Yay I got it right thank you sooooooooooo much you were awesome :)