Analysis and Approaches for IBDP Maths Ebook 1 | Page 81

Front Page
Exercise 27
1. In the expansion of
values of k .
x
2�
3 2
6
�
�kx
� �
� x � , the coefficient of the term in 4
x is 6000. Find the
[6]
2. In the expansion of
values of k .
10
2 � k �
kx �3x
� �
� x � , the coefficient of the term in 2
x is 3919104. Find the
[6]
3. The fifth term in the expansion of
( x 2 )
12
� k is
8
7920x . Find the possible values of k .
[5]
4. Consider the expansion of
value of k .
� x k �
� �
2 �
�k
x� 18
12155
. The constant term is . Find the possible
128
[6]
7
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