Respuesta :

[tex]\dfrac{x^2-5x+6}{x^2-4} \times \dfrac{x^2+3x+2}{x^2-2x-3 } [/tex]

[tex]= \dfrac{(x - 2)(x - 3)}{(x-2)(x+2)} \times \dfrac{(x + 2)(x + 1)}{(x + 1)(x - 3)} [/tex]

[tex]= 1[/tex]

Answer: 1