Analysis and Approaches SL Practice Paper Book | Page 88
3 . In the expansion of
8
� 4 � �kx
� � � x �
,
k
�
0
, the ratio of the coefficient of the term in
4 x to the constant term is 9:40 . Find the value of k . [ 6 ]
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Analysis and Approaches SL Practice Paper Book | Page 87
Analysis and Approaches SL Practice Paper Book | Page 89