9709 P11 - Jun 2010 - Q2
969
(i) Find the first 3 terms in the expansion of \(\left( 2x - \frac{3}{x} \right)^5\) in descending powers of \(x\).
(ii) Hence find the coefficient of \(x\) in the expansion of \(\left( 1 + \frac{2}{x^2} \right) \left( 2x - \frac{3}{x} \right)^5\).
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