Solve for Q, b, a, c
Q=b-\sqrt{b}\text{, }b\in \begin{bmatrix}0,\frac{1}{16}\end{bmatrix}\text{, }a=2b-\sqrt{b}\text{, }c=2b-\sqrt{b}\text{; }Q=b-\sqrt{b}\text{, }b\geq \frac{1}{16}\text{, }a=2b-\sqrt{b}\text{, }c=2b-\sqrt{b}
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