\left\{ \begin{array} { l } { C = - 9 - 2 b } \\ { a = - \frac { b } { 2 \times 2 } } \\ { \frac { 4 \times 2 c - b ^ { 2 } } { 4 \times 2 } = - \frac { 1 } { 2 } a } \end{array} \right.
Solve for C, b, a, c
C=\sqrt{32c+1}-8\text{, }b=\frac{-\sqrt{32c+1}-1}{2}\text{, }a=\frac{\sqrt{32c+1}+1}{8}\text{, }c\geq -\frac{1}{32}
C=-\sqrt{32c+1}-8\text{, }b=\frac{\sqrt{32c+1}-1}{2}\text{, }a=\frac{-\sqrt{32c+1}+1}{8}\text{, }c\geq -\frac{1}{32}
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