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OpenStudy (anonymous):
Use mathematical induction to prove the statement is true for all positive integers n, or show why it is false. 1^2 + 4^2 + 7^2 + ... + (3n - 2)^2 = n(6n^2-3n-1)/2
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OpenStudy (anonymous):
@helder_edwin
OpenStudy (helder_edwin):
we already worked on this one.
OpenStudy (anonymous):
Oh no! You're right! >_< hold on again. Sorry
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