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Use mathematical induction to prove that 12+22+32+42+52+...+(n-1)2+n2= n(n+1)(2n+1)/6. (First state which of the 3 versions of...

Use mathematical induction to prove that 12+22+32+42+52+...+(n-1)2+n2= n(n+1)(2n+1)/6. (First state which of the 3 versions of induction: WOP, Ordinary or Strong, you plan to use.)

proof: Answer goes here.

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