Same exact thing up here, except now it was with x2 and y2 as opposed to x1 and y1. Then we're just going to keep doing that n times. We're just going to keep doing it n times. We're going to do it for the third, x3, y3, keep going, keep going, all the way until we get to this nth term over here. This nth term over here when we square it is going to be yn squared minus 2yn times mxn plus b plus mxn plus b squared. Now the next thing I want to do is actually expand these out a little bit more. Let's expand these out a little more.