question_answer

Find the middle terms in the expansion of\[{{\left( \frac{2}{3}{{x}^{2}}-\frac{3}{2x} \right)}^{20}}\].

A)  \[^{20}{{C}_{10}}{{x}^{10}}\]       

B)  \[^{20}{{C}_{10}}{{x}^{11}}\]                 

C)  \[^{20}{{C}_{10}}{{\left( \frac{2}{3}{{x}^{2}} \right)}^{10}}\]      

D)  \[^{20}{{C}_{10}}{{\left( \frac{3}{2}{{x}^{5}} \right)}^{3}}\]

E)  None of these