I have been doing some function questions. I think it is Calculus because it is in a Calculus course; however, it could be pre-calculus. I decided to post it here anyway. Question: (x+5)(x+4) ___________ (x+4) Every question I have done involve a POD like this. Two on the top and one on the bottom that cancels out. POD = -4 and is a circle on the graph. At a y component and x = -4. The point doesn't go through there. Is every POD situation end up looking like that. I don't know what POD even means, lol. Thanks.