Question: 2. *Prove 12+22+3 + + n = 1/n (n + 1)(2n + 1) for all natural numbers n N 3. Prove 7-6n-1 is divisible

2. *Prove 12+22+3 + + n = 1/n (n + 1)(2n +

2. *Prove 12+22+3 + + n = 1/n (n + 1)(2n + 1) for all natural numbers n N 3. Prove 7"-6n-1 is divisible by 36 for every n N.

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