PAIBOT
/
Learn
Sign in
Sign up
日本語
English
简体中文
Math Drills
Sequences
Sigma notation & sums
Practice 1
Sequences
Sigma notation & sums
1 / 5
Standard
Calculate.
∑
k
=
1
6
(
3
k
2
−
k
)
\sum_{k=1}^{6}\left(3k^{2} - k\right)
k
=
1
∑
6
(
3
k
2
−
k
)
1
231
231
231
2
252
252
252
3
273
273
273
4
294
294
294
Answer
