Question: Express the sums in closed form a . k = 1 n ( 2 k + 5 ) b . k = 1 n (

Express the sums in closed form
a.k=1n(2k+5)
b.k=1n(k2n+8)
c.k=1n(5n-2kn)
Express the sums in closed form a . k = 1 n ( 2 k

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