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$\left\{\begin{matrix}\sqrt{1-x^{2}}-\sqrt{y\sqrt{y}+1}-\sqrt{y}=x\\(4x+3)\end{matrix}\right.$

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$\left\{\begin{matrix} \sqrt{1-x^{2}}-\sqrt{y\sqrt{y}+1}-\sqrt{y}=x\\ (4x+3)(\sqrt{4-\sqrt{y}}+\sqrt[3]{3x+8})=9 \end{matrix}\right.$






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