Rational expression questions
Premise: the first two questions were to simplify ((1/x+3)+(6/x^2+4x+3))*(x+3)/(x+1), and then explain how I got there (which I did). I got the answer of (x+7)/(x+1)^2. The questions I am not sure how to answer are the following:
• Are there any values "x" cannot be? Explain.
• Find the values of "x" that make the expression equal to 0. Explain the steps you would use to find these values.
Any help is appreciated!