So it's over x minus three, and we have f of x minus nine. But as we approach from the left-hand side, this is f of x. As x is less than three, f of x is equal to x squared. So this would be, instead of f of x minus nine, I'll write x squared minus nine. And x squared minus nine, this is a difference of squares, so this is x plus three times x minus three. X plus three times x minus three. And so these would cancel out.