Show that n(n – 1)(n + 1) + 6n ≡ n3 + 5n

Daniel Hiller asked Nov 21, 2022

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Daniel Hiller asked Nov 21, 2022

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21 votes

Answer:

Step-by-step explanation:

n(n - 1)(n + 1) + 6n = n^3 + 5n
n(n^2 - 1) + 6n = n^3 + 5n
n^3 - n + 6n = n^3 + 5n
n^3 + 5n = n^3 + 5n (proven)

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