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N(2n+1)-(n-6)=2n(n+1)+10
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N(2n+1)-(n-6)=2n(n+1)+10

User Jvnill
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2 Answers

2 votes
n = -2. Is that what you're trying to figure out?
User Efalcao
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8.7k points
3 votes
2n^2 + n -n + 6 = 2n^2 + 2n + 10
6 = 2n + 10
-4 = 2n
-2 = n
User Chris Salij
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8.3k points
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