# precalculus

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Simplify the Factorial Expression.
(3n+1)!*3!/(3n-2)!

• precalculus -

(3n+1)!*3!/(3n-2)!
= (3n+1)(3n)(3n-1)(3n-2)!3!/(3n-2)!
= 18n(9n^1 - 1)

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