Can you make these 2 fractions into 1?

$$2\sqrt{9-2x} - \dfrac{2x}{\sqrt{9-2x}}$$

I thought you could make them into $\dfrac{-2x+18}{\sqrt{9-2x}}$

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rather $18-4x-2x$ in the nominator –  Berci Oct 13 '12 at 11:35
You're right, thank you. –  Tittyboy Oct 13 '12 at 11:38
Else it's maximally ok –  Berci Oct 13 '12 at 11:39

I assume that we should make the statement that $x$ is not equal 9/2. –  Emmad Kareem Oct 13 '12 at 12:38
That is implicit as soon as the initial expression is given. In fact, you need $x < \frac{9}{2}$. –  Michael Albanese Oct 13 '12 at 12:44