Analysis and Approaches HL Practice Paper Book | Page 173
� 3 �
3
4 . Given that the coefficient of x in the expansion of �1 � x� ( 1�2 nx)
, where � 4 � n� , is
105
4
,
find
the
value
of
n
.
[ 7 ]
n
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Analysis and Approaches HL Practice Paper Book | Page 172
Analysis and Approaches HL Practice Paper Book | Page 174