1) On pose A(x) =\\(\frac{6}{x+2} - \frac{3}{x-2})\\. On a :

a) A(x) =\\(\frac{3}{2x})\\

b) A(x) =\\(\frac{x-6}{x^2 - 4})\\

c) A(x) =\\(\frac{3x - 18}{x^2 - 4})\\