Now let's move to the second term. Plus, it's going to be the same thing, but instead of y1s and x1s, it's going to be y2s and x2s. So it is y2 squared minus 2y2mx2 minus 2y2b plus m squared x2 squared plus 2 times mx2b plus b squared. We're going to keep doing this all the way until we get the nth term. All the way until we get to the nth color we should say. So this is going to be yn squared minus 2ynmxn. You don't even have to think, you just have to substitute these with n's now.