2
12
22
n?
+...+
+
1.3 3.5
(2n-1)(2n +1)
1)
n(n+1)
2n +1
2)
n(n+1)
2(2n +1)
n
n+1
4)
3)
(
2(2n +1)
2n +1
Answers
Answered by
9
Answer:
write the question properly. nothing is understandable
Answered by
2
Answer:
Xmas FM Hf km c
Step-by-step explanation:
thx hmm cb
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