Lös ut t (complex solution)
\left\{\begin{matrix}t=\frac{3\sqrt{y^{2}+14y+9}+y+9}{2y}\text{; }t=\frac{-3\sqrt{y^{2}+14y+9}+y+9}{2y}\text{, }&y\neq 0\\t=-3\text{, }&y=0\end{matrix}\right,
Lös ut y (complex solution)
y=\frac{9\left(t+3\right)}{\left(t-2\right)\left(t+1\right)}
t\neq -1\text{ and }t\neq 2
Lös ut t
\left\{\begin{matrix}t=\frac{3\sqrt{y^{2}+14y+9}+y+9}{2y}\text{; }t=\frac{-3\sqrt{y^{2}+14y+9}+y+9}{2y}\text{, }&y\leq -2\sqrt{10}-7\text{ or }\left(y\neq 0\text{ and }y\geq 2\sqrt{10}-7\right)\\t=-3\text{, }&y=0\end{matrix}\right,
Lös ut y
y=\frac{9\left(t+3\right)}{\left(t-2\right)\left(t+1\right)}
t\neq 2\text{ and }t\neq -1
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