9709 P13 - Jun 2013 - Q4
961
(i) Find the first three terms in the expansion of \((2 + ax)^5\) in ascending powers of \(x\).
(ii) Given that the coefficient of \(x^2\) in the expansion of \((1 + 2x)(2 + ax)^5\) is 240, find the possible values of \(a\).
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