Khẳng định nào sau đây là đúng?
200923=200923\sqrt[3]{2009^{2}} = 2009^{\dfrac{2}{3}}320092=200932.
200923=200913\sqrt[3]{2009^{2}} = 2009^{\dfrac{1}{3}}320092=200931.
200923=200912\sqrt[3]{2009^{2}} = 2009^{\dfrac{1}{2}}320092=200921.
200923=200932\sqrt[3]{2009^{2}} = 2009^{\dfrac{3}{2}}320092=200923.
200923=200923\sqrt[3]{{{{2009}^2}}} = {2009^{\frac{2}{3}}}320092=200932.
