The domain of a function are all possible values for x.
To find the domain of a rational function, we set the denominator equal to 0, and solve for x. Those values of x are <em>not</em> included in the domain, since the denominator of 0 would make the rational function undefined.
Setting the factors equal to 0.
The values of x that are <em>not</em> in the domain of the rational function are x=-2, x=1, x=2, and x=0.