Solve for x, y, z (complex solution)
x=d+\frac{\sqrt{-4d-7}}{2}-\frac{1}{2}\text{, }y=\frac{-\sqrt{-4d-7}+1}{2}\text{, }z=d
x=d-\frac{\sqrt{-4d-7}}{2}-\frac{1}{2}\text{, }y=\frac{\sqrt{-4d-7}+1}{2}\text{, }z=d\text{, }a=c\text{ and }d=c\text{ and }b=c
Solve for x, y, z
x=b+\frac{\sqrt{-4b-7}}{2}-\frac{1}{2}\text{, }y=\frac{-\sqrt{-4b-7}+1}{2}\text{, }z=b
x=b-\frac{\sqrt{-4b-7}}{2}-\frac{1}{2}\text{, }y=\frac{\sqrt{-4b-7}+1}{2}\text{, }z=b\text{, }b=d\text{ and }a=d\text{ and }c=d\text{ and }d\leq -\frac{7}{4}
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