Question: Use mathematical induction to prove that for every positive integer n, 123+234+...+n(n+1)(n+2)= n(n+1)(n+2)(n+3). 4

Use mathematical induction to prove that for every positive integer n,

123+234+...+n(n+1)(n+2)= n(n+1)(n+2)(n+3). 4

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