Beräkna (complex solution)
a+b=8ab\text{ and }8ab=3
Lös ut b
\left\{\begin{matrix}b=\frac{\sqrt{30}}{4}+\frac{3}{2}\text{, }&a=-\frac{\sqrt{30}}{4}+\frac{3}{2}\\b=-\frac{\sqrt{30}}{4}+\frac{3}{2}\text{, }&a=\frac{\sqrt{30}}{4}+\frac{3}{2}\end{matrix}\right,
Lös ut a
\left\{\begin{matrix}a=\frac{\sqrt{30}}{4}+\frac{3}{2}\text{, }&b=-\frac{\sqrt{30}}{4}+\frac{3}{2}\\a=-\frac{\sqrt{30}}{4}+\frac{3}{2}\text{, }&b=\frac{\sqrt{30}}{4}+\frac{3}{2}\end{matrix}\right,
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