Simplify the expression 4n2−162n2+4n\frac{4n^2 - 16}{2n^2 + 4n}2n2+4n4n2−16 for n≠0,−2n \neq 0, -2n=0,−2.
2(n−2)n\frac{2(n-2)}{n}n2(n−2)
2(n+2)n\frac{2(n+2)}{n}n2(n+2)
n−2n\frac{n-2}{n}nn−2
2(n−2)2(n-2)2(n−2)