A rational function is a function of a quotient (fraction) of two polynomial functions.

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.

[1] Q(x) = -x(1 - x)/(3x^2 +5x -2)

Thus,

Find those .

And then the domain is all EXCEPT the ones you found just above.

Same approach to other problem.