Question: a . Show k = 0 n ( n k ) 2 k = 3 n b . Simplify k = 0 n ( n

a. Show k=0n(nk)2k=3n
b. Simplify k=0n(nk)xk
a . Show k = 0 n ( n k ) 2 k = 3 n b . Simplify k

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