perplexus.info :: Numbers : A Pair of Factorial Quartic Equations

A Pair of Factorial Quartic Equations (Posted on 2022-07-02)

Solve for n (a positive integer) in each equation:
(1) n! = 8n^4 + 15n^3 - 4n^2 + 15n + 8
(2) n! = 9n^4 + 4n^3 + n^2 + 1344

Both analytic and computer solutions welcome.

See The Solution Submitted by Larry

Rating: 4.0000 (2 votes)

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Subject	Author	Date
No Subject	hoadao3493	2022-07-23 13:27:10
very computerized solution	Charlie	2022-07-02 10:32:34
Semi-Analytic Puzzle Solution: Part 2	K Sengupta	2022-07-02 07:23:22
Semi-Analytic Puzzle Solution: Part 1	K Sengupta	2022-07-02 07:00:11

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