\left\{ \begin{array} { l } { x + y + z = 7 } \\ { - 14 y - 3 = 0 } \\ { z x + 6 y - 2 z = 0 } \end{array} \right.
Leystu fyrir x, y, z
x=\frac{\sqrt{4321}+129}{28}\approx 6.954796919\text{, }y=-\frac{3}{14}\approx -0.214285714\text{, }z=\frac{73-\sqrt{4321}}{28}\approx 0.259488796
x=\frac{129-\sqrt{4321}}{28}\approx 2.259488796\text{, }y=-\frac{3}{14}\approx -0.214285714\text{, }z=\frac{\sqrt{4321}+73}{28}\approx 4.954796919
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