Difference between revisions of "AoPS Wiki talk:Problem of the Day/July 8, 2011"
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==Solution== | ==Solution== | ||
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By the Binomial Theorem, we have | By the Binomial Theorem, we have | ||
Latest revision as of 16:22, 8 July 2011
Problem
AoPSWiki:Problem of the Day/July 8, 2011
Solution
By the Binomial Theorem, we have
So, the answer is .