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Find all positive integers n for which \($n^2 - 19n + 99$\) is a perfect square.

 Mar 19, 2021
 #1
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There are 4 possible answers: 1, 9, 10, and 18.

 Mar 19, 2021
 #2
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thanks.

Dennis070sinneD  Mar 19, 2021
 #3
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You are welcome!

Guest Mar 19, 2021

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