// 2 \
|| (3 + 2*x) |
|| ------------ for |3/2 + x| < 1|
|| 4*(-1/2 - x) |
|| |
|| oo |
oo + |< ___ |
|| \ ` |
|| \ -n n |
|| / 2 *(3 + 2*x) otherwise |
|| /__, |
||n = 2 |
\\ /
$$\begin{cases} \frac{\left(2 x + 3\right)^{2}}{4 \left(- x - \frac{1}{2}\right)} & \text{for}\: \left|{x + \frac{3}{2}}\right| < 1 \\\sum_{n=2}^{\infty} 2^{- n} \left(2 x + 3\right)^{n} & \text{otherwise} \end{cases} + \infty$$
oo + Piecewise(((3 + 2*x)^2/(4*(-1/2 - x)), |3/2 + x| < 1), (Sum(2^(-n)*(3 + 2*x)^n, (n, 2, oo)), True))