Question: Prove that 3 + 9 + 18 + 30 + + 3/2 n (n +1) = n(n+1) (n+2) whenever n is a positive

Prove that 3 + 9 + 18 + 30 + … + 3/2 n (n +1) = ½ n(n+1) (n+2) whenever n is a positive integer.

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To prove that 3 9 18 30 ldots frac32 n n1 frac12 nn1n2 for positive integers n we can use the princi... View full answer

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