A) 36
B) - 108
C) - 72
D) - 36
Correct Answer: D
Solution :
\[\frac{1}{60}{{\left( 2{{x}^{2}}-\frac{3}{{{x}^{2}}} \right)}^{6}}-\frac{1}{81}.{{x}^{8}}{{\left( 2{{x}^{2}}-\frac{3}{{{x}^{2}}} \right)}^{6}}\] its general term \[\frac{1}{60}{{\,}^{6}}{{C}_{1}}{{2}^{6-r}}{{\left( -3 \right)}^{r}}{{x}^{12-r}}-\frac{1}{81}{{\,}^{6}}{{C}_{1}}{{2}^{6-r}}{{\left( -3 \right)}^{2}}{{12}^{20-4r}}\] for term independent of x, r for Ist expression is 3 and r for second expression is 5 \[\therefore \]term independent of \[x=36\]
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