Numitorul comun pentru prima paranteză este x(x-2)(x+2)
[tex]\it \Big(\dfrac{^{x(x+2))}1}{\ \ \ x-2}-\dfrac{^{x^2-4)}2}{\ \ x}+\dfrac{^{x(x-2))}1}{x+2}\Big):\dfrac{4}{x(x^2-4)} =\\ \\ \\ =\dfrac{x^2+2x-2x^2+8+x^2-2x}{x((x-2)(x+2))}\cdot \dfrac{x(x^2-4)}{4}=\dfrac{8}{x(x^2-4)}\cdot\dfrac{x(x^2-4)}{4}=\\ \\ \\ = \dfrac{8}{4}=2[/tex]
