So if I have one over x squared, or let me write it, let me, one over x squared times the square root of four x to the fourth minus x, like we have in the numerator here. This is equal to, this is the same thing as one over the square root of x to the fourth times the square root of four x to the fourth minus x. And so this is equal to the square root of four x to the fourth minus x over x to the fourth, which is equal to the square root of, and all I did is I brought the radical in here. This is, you could view this as the square root of all this divided by the square root of this, which is equal to, just using our exponent rules, the square root of four x to the fourth minus x over x to the fourth. And then this is the same thing as four minus, x over x to the fourth is one over x to the third. So this numerator is going to be, the numerator is going to be the square root of four minus one x to the third power. And then the denominator is going to be equal to, well you divide two x squared by x squared.