GiáTrị của Biểu thức là:
\(\left(-3\right)\sqrt{2}\sqrt{11}\sqrt{g}\sqrt{t}+3\sqrt{2}\sqrt{11}+2\sqrt{3^3}\sqrt{5}\)
Ta có:\(x=\sqrt[3]{15+3\sqrt{22}}+\sqrt[3]{15-3\sqrt{22}}\Rightarrow x^3=\left(\sqrt[3]{15+3\sqrt{22}}\right)^3+\left(\sqrt[3]{15-3\sqrt{22}}\right)^3+3\sqrt[3]{\left(15+3\sqrt{22}\right)\left(15-3\sqrt{22}\right)}\left(\sqrt[3]{15+3\sqrt{22}}+\sqrt[3]{15-3\sqrt{22}}\right)\)\(\Rightarrow x^3=15+3\sqrt{22}+15-3\sqrt{22}+3\sqrt[3]{27}x\Rightarrow x^3=30+9x\Rightarrow x^3-9x+1981==2011\)
