Square root of x minus two over x minus four. When we say conjugate, let's multiply it by the square root of x plus two over the square root of x plus two. Once again, it's the same expression over the same expression, so I'm not fundamentally changing its value. And so this is going to be equal to, well if I have a plus b times a minus b, I'm gonna get a difference of squares. So it's gonna be square root of x squared, which is, let me just write it, it's gonna be square root of x squared minus four over, well square root of x squared is just going to be x minus four. So let me rewrite it that way. So it's x minus four over x minus four times square root of x plus two.