(x^2+3x+2)/(x^2-4) = (x^2+2x+x+2)/((x-2)(x+2) = x(x+2)+(x+2)/(x-2)(x+2) =
(x+2)(x+1)(x-2)(x+2) = (x+1)/(x-2)
Are sens numai daca x apartine Q
