Lös ut a (complex solution)
\left\{\begin{matrix}a=\frac{b}{x-2}\text{, }&x\neq 2\\a\in \mathrm{C}\text{, }&\left(x=0\text{ or }x=2\right)\text{ and }b=0\\a=-\frac{b}{x}\text{, }&x\neq 0\end{matrix}\right,
Lös ut a
\left\{\begin{matrix}a=\frac{b}{x-2}\text{, }&x\neq 2\\a\in \mathrm{R}\text{, }&\left(x=0\text{ or }x=2\right)\text{ and }b=0\\a=-\frac{b}{x}\text{, }&x\neq 0\end{matrix}\right,
Lös ut b
b=-ax
b=a\left(x-2\right)
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