1)$\sqrt{x^{3}+5}+2\sqrt[3]{2x+1}+x=0$
2)$2\sqrt[3]{x^{2}-1}+\sqrt[3]{(x^{2}-1)^{2}}=(\sqrt{x+1})^{2}+2\sqrt{x+1}$
3)$\sqrt{1+\sqrt{1-X^{2}}}\left [ \sqrt{(1+x)^{3}}-\sqrt{(1-x)^{3}} \right ]=\frac{2}{\sqrt{3}}+\sqrt{\frac{1-x^{2}}{3}}$
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