Simplify: fracn2−n−12n2−16\\frac{n^2 - n - 12}{n^2 - 16}fracn2−n−12n2−16 (assume nneqpm4n \\neq \\pm 4nneqpm4).
fracn+3n+4\\frac{n+3}{n+4}fracn+3n+4
fracn−3n−4\\frac{n-3}{n-4}fracn−3n−4
fracn+3n−4\\frac{n+3}{n-4}fracn+3n−4
fracn−4n+4\\frac{n-4}{n+4}fracn−4n+4