SOLUTION: if 18 is subtracted from twice the square of an integer, the result is equal to nine times the integer. what does the integer must be?

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Question 1021911: if 18 is subtracted from twice the square of an integer, the result is equal to nine times the integer. what does the integer must be?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
2N%5E2-18=9N
2N%5E2-9N-18=0
%28N-6%29%282N%2B3%29=0
We're only interested in integers so,
N-6=0
N=6