The "bad" points are where the denominator is zero.Secondly, how do I find the domain of rational functions?
Again the denominator is not zero.Find the domain of each rational function below.
 Q(x) = -x(1 - x)/(3x^2 +5x -2)
Find those .
And then the domain is all EXCEPT the ones you found just above.
Same approach to other problem.