Prove that n2 ?7 n + 12 is nonnegative whenever n is an

Chapter 5, Problem 28E

(choose chapter or problem)

Problem 28E

Prove that n2 ‒7 n + 12 is nonnegative whenever n is an integer with n ≥ 3.

In Exercises 29 and 30, Hn denotes the nth harmonic number.

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