Week 6- Moment of Clarity

I could not grasp the concept of how to determine the domain of the quadratics. I didn't understand why sometimes it could have a union and sometimes not. Often I find myself over complicating the material, which is exactly what I was doing. When I asked aloud, you explained it in a way that was not talking over my head and it clicked. Positive has a union of the two points whereas negative does not and it makes sense because of how it sits on the graph. thank you so much for your help! it feels amazing to actually GET the material!