I could say, look, I could say this is my f of x right over here. I could say this is my g of x right over here, and I could apply the quotient rule. This looks like a quotient of two expressions. And you could do that, and if you do all the mathematics correctly, you will get the correct answer. But in this case, it's good to just take a little time to realize, well, can I simplify this algebraically so maybe I can do a little bit less work? And if you look at it that way, you might realize, wait, what if I factored this numerator? I can factor it as x plus two times x minus one, and then I could cancel these two characters out, and I could say, hey, you know what?