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n in (-oo:+oo)
n = (n^2-(3*n))/14 // - (n^2-(3*n))/14
n-((n^2-(3*n))/14) = 0
n-((n^2-3*n)/14) = 0
(-1*(n^2-3*n))/14+n = 0
(-1*(n^2-3*n))/14+(14*n)/14 = 0
14*n-1*(n^2-3*n) = 0
17*n-n^2 = 0
17*n-n^2 = 0
n*(17-n) = 0
17-n = 0 // - 17
-n = -17 // * -1
n = 17
n*(n-17) = 0
(n*(n-17))/14 = 0
(n*(n-17))/14 = 0 // * 14
n*(n-17) = 0
( n-17 )
n-17 = 0 // + 17
n = 17
( n )
n = 0
n in { 17, 0 }
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