#2. The binomial theorem states that for any real numbers a and b, In (a + b)n = =Σ" ("a²-kbk for any integer n ≥ 0. 2-1 k=0 Use this theorem to show that for any integer In Σ" (-1)^(^)3n-k2k = 1. k=0 n ≥ 0,

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