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Mathematics, 17.10.2019 18:10 erickamurillo9929

Prove that for a positive integer n, 2 + 5 + 8 + 11 + + (3.n-1)= 12: n (3. n + 1) n . - -- a. .

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Prove that for a positive integer n, 2 + 5 + 8 + 11 + + (3.n-1)= 12: n (3. n + 1) n . - -- a. ....
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