Simplify: x2−2x−8x2−4\dfrac{x^2 - 2x - 8}{x^2 - 4}x2−4x2−2x−8 for x≠2,−2x \neq 2, -2x=2,−2.
x−4x−2\dfrac{x-4}{x-2}x−2x−4
x+4x+2\dfrac{x+4}{x+2}x+2x+4
x−4x+2\dfrac{x-4}{x+2}x+2x−4
x+2x−4\dfrac{x+2}{x-4}x−4x+2