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