Question

For which values of x is the expression x^2−x−12/x^2+x−2 undefined?

Answer 1

Explanation:

`(x^2-x-12)/(x^2+x-2) =(x^2-x-12)/(x^2+2x-x-2) =(x^2-x-12)/(x(x+2)-1(x+2)) =(x^2-x-12)/((x+2)(x-1))`

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