Counting & ProbabilityMediumBinomial Theorem, Pascal & Combinatorial Identities ShareBinomial Theorem, Pascal & Combinatorial Identities · Medium problemEvaluate ∑k=06k2(6k)\displaystyle\sum_{k=0}^{6}k^2\binom{6}{k}k=0∑6k2(k6).Check Show answer Walk through it step by step Practice more like this Review this concept