Respuesta :

Answer:

Step-by-step explanation:

[tex]\frac{x^2-x-12}{x^2+x-2} =\frac{x^2-x-12}{x^2+2x-x-2} =\frac{x^2-x-12}{x(x+2)-1(x+2)} =\frac{x^2-x-12}{(x+2)(x-1)}[/tex]

it is undefined for x=-2 and x=1