Mathematics, 04.02.2021 18:50 jandrew3168
1^2 + 4^2 + 7^2 + ... + (3n - 2^)2 = quantity n times quantity six n squared minus three n minus one all divided by two
Answers: 3
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1^2 + 4^2 + 7^2 + ... + (3n - 2^)2 = quantity n times quantity six n squared minus three n minus one...
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