what is the value of "N"?
we can solve this equation when we know the value of N, once we know the value of N we just add 1 to it,
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(n*n)+n
9n + n = 10n
-n + 4n = 4n - n = 3n Done!!!!!
If you mean: -3(n+5) = 12 then n works out as -9 because -3(-9+5) = 12
2n2 + 15n + 7 = 2n2 + n + 14n + 7 = (2n2 + n) + (14n + 7) = n(2n + 1) + 7(2n + 1) = (2n + 1)(n + 7)