Question

What is the sum of the series?

Answer 1

For this case we must find the sum of the given series. For this we must expand the series for each value of k.

`(-2 (3) +5) + (- 2 (4) +5) + (- 2 (5) +5) + (- 2 (6) +5) =\\(-6 + 5) + (- 8 + 5) + (- 10 + 5) + (- 12 + 5) =`

Different signs are subtracted and the sign of the major is placed, while equal signs of sum and the same sign is placed.

`-1-3-5-7 =\\-16`

The value of the series is -16

ANswer:

-16