This was an indeterminate form, and the limit of this function's derivative over this function's derivative exists. So this limit must also equal negative 4 over 3. And by that same argument, that limit also must be equal to negative 4 over 3. And for those of you who say, hey, we already knew how to do this. We could just factor out an x squared. You are absolutely right, and I'll show you that right here. Just to show you that it's not the only, L'Hopital's Rule isn't the only game in town.