2
6*x 12*x
- -------- + -----
2 x + 6
(x + 6)
$$- \frac{6 x^{2}}{\left(x + 6\right)^{2}} + \frac{12 x}{x + 6}$$
/ 2 \
| x 2*x |
12*|1 + -------- - -----|
| 2 6 + x|
\ (6 + x) /
-------------------------
6 + x
$$\frac{12 \left(\frac{x^{2}}{\left(x + 6\right)^{2}} - \frac{2 x}{x + 6} + 1\right)}{x + 6}$$
/ 2 \
| x 2*x |
36*|-1 - -------- + -----|
| 2 6 + x|
\ (6 + x) /
--------------------------
2
(6 + x)
$$\frac{36 \left(- \frac{x^{2}}{\left(x + 6\right)^{2}} + \frac{2 x}{x + 6} - 1\right)}{\left(x + 6\right)^{2}}$$