Find the number of ordered pairs $(m,n)$ of integers that satisfy \[mn = 2m + 4n.\] Find the number of ordered pairs $(m,n)$ of integers that satisfy \[mn = 2m + 4n.\]

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asked Dec 10, 2021 174k views

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Find the number of ordered pairs $(m,n)$ of integers that satisfy \[mn = 2m + 4n.\]
$Find the number of ordered pairs $(m,n)$ of integers that satisfy \[mn = 2m + 4n.\]$

Mathematics
high-school

Glenn Utter asked

by Glenn Utter

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There are four pairs (m,n) that work: (5,10), (6,6), (8,4), and (12,3).

WetFish answered Dec 15, 2021

by WetFish

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