Question: Prove that 1-3+2-4+3-5+. for every positive integer n. n(n+1)(2n+7) 6

Prove that 1-3+2-4+3-5+. for every positive integer n. n(n+1)(2n+7) 6
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Prove that 1-3+2-4+3-5+. for every positive integer n. n(n+1)(2n+7) 6

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