Solve D=(frac{2sqrt{x}}{sqrt{x}+3}+frac{sqrt{x}}{sqrt{x}-3}-3x+3/x-9):(frac{2sqrt{x}-2}{sqrt{x}-3}-1)

$$D = ( \frac { 2 \sqrt { x } } { \sqrt { x } + 3 } + \frac { \sqrt { x } } { \sqrt { x } - 3 } - \frac { 3 x + 3 } { x - 9 } ) : ( \frac { 2 \sqrt { x } - 2 } { \sqrt { x } - 3 } - 1 )$$

Solve for D (complex solution)

$$D=-\frac{3}{\sqrt{x}+3}$$

$$x\neq 9$$

Solve for x (complex solution)

$$x=9\left(1+\frac{1}{D}\right)^{2}$$

$$D\neq 0\text{ and }D\neq -\frac{1}{2}\text{ and }\left(D=-1\text{ or }arg(3+\frac{3}{D})\geq \pi \right)$$

Solve for D

$$D=-\frac{3}{\sqrt{x}+3}$$

$$x\geq 0\text{ and }x\neq 9$$

Solve for x

$$x=9\left(1+\frac{1}{D}\right)^{2}$$

$$D\neq -\frac{1}{2}\text{ and }D\geq -1\text{ and }D<0$$