Which expression is equivalent to n2+7n−2−3n+4?

3n3+17n2-34n+8
3n3-23n2+22n-8
-3n3+23n2-22n+8
-3n3-17n2+24-8

The expression equivalent to n^2 + 7n - 2 - 3n + 4 is:

n^2 + 4n + 2