Analysis and Approaches for IBDP Maths Ebook 1 | Page 79

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Exercise 26
1. Consider the expansion of
3 2
16
� �
�x
� �
� x � .
(a)
(b)
Write down the number of terms of this expansion.
Find the coefficient of
20
x .
[1]
[5]
2. Consider the expansion of
9
(5x � 4) .
(a)
Write down the number of terms of this expansion.
[1]
(b)
Find the coefficient of
3. Consider the expansion of
3
x .
2 15
(3x � 8) .
[5]
7
(a)
(b)
Write down the number of terms of this expansion.
Find the term in
16
x .
[1]
[5]
4. Consider the expansion of
14
� 2 1 �
�2x
�
2 �
� x � .
(a)
(b)
Write down the number of terms of this expansion.
Find the term in
8
x � .
[1]
[5]
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