## Elementary Algebra

-$n^{2}$ + 2n - 17
(n - 6) - (2$n^{2}$ - n + 4) + ($n^{2}$ - 7) = Use the distributive property: n - 6 - 2$n^{2}$ + n - 4 + $n^{2}$ - 7 = Combine similar terms. (-2$n^{2}$ + $n^{2}$) + (n + n) + (-6 - 4 - 7) = Simplify. -$n^{2}$ + 2n - 17