This term right here, so this term right here is going to be equal to n times the mean of the products of xy. This term right here is n times the mean of the y values. That's what this term right here is. And then this term right here is n times the mean of the x, the mean of the x's squared. The mean of the x squared values, I should say. This term right here is the mean of the x's times n. Right, if you divided this by n, you'd get the mean. Since we're not dividing it by n, this is the mean times n. And then this is obviously, we don't have to simplify anything.