Answer
-5$n^{2}$ - 2n
Work Step by Step
3($n^{2}$ - 2n - 4) - 4(2$n^{2}$ - n - 3) =
Use the distributive property to remove round brackets.
3$n^{2}$ - 6n - 12 - 8$n^{2}$ + 4n + 12 =
Group similar terms.
(3$n^{2}$ - 8$n^{2}$) + (-6n + 4n) + (-12 + 12) =
Simplify.
-5$n^{2}$ - 2n
