Ebaluatu (complex solution)
ax\left(2x+a\right)\neq 4
Ebatzi: x
\left\{\begin{matrix}x\in \mathrm{R}\setminus -\frac{\sqrt{a^{4}+32a}}{4a}-\frac{a}{4},\frac{\sqrt{a^{4}+32a}}{4a}-\frac{a}{4}\text{, }&a>0\text{ or }a\leq -2\sqrt[3]{4}\\x\in \mathrm{R}\text{, }&a>-2\sqrt[3]{4}\text{ and }a\leq 0\end{matrix}\right.
Ebatzi: a
\left\{\begin{matrix}a\in \mathrm{R}\setminus -\frac{\sqrt{x^{4}+4x}}{x}-x,\frac{\sqrt{x^{4}+4x}}{x}-x\text{, }&x>0\text{ or }x\leq -\sqrt[3]{4}\\a\in \mathrm{R}\text{, }&x>-\sqrt[3]{4}\text{ and }x\leq 0\end{matrix}\right.
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