APPLYING \[{{T}_{r+1}}={{\,}^{N}}{{C}_{r}}{{X}^{n-r}}{{a}^{r}}\]for \[{{(x+a)}^{n}}\] Hence \[{{T}_{6}}={{\,}^{10}}{{C}_{5}}{{(2{{x}^{2}})}^{5}}{{\left( -\frac{1}{3{{x}^{2}}} \right)}^{5}}\] \[=-\frac{10\,!}{5\,!\,5\,!}32\times \frac{1}{243}=-\frac{896}{27}\]