Evaluate
x=0,\ \text{true},\ x=\frac{\sqrt{13}+2}{3}\text{ or }x=\frac{2-\sqrt{13}}{3},\ x=\frac{1}{5}-\frac{3}{5}i\text{ or }x=\frac{1}{5}+\frac{3}{5}i,\ x=-2,\ y=1,\ z=y
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Examples
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