Find the middle terms in the expansion of \(\rm \left(x - \frac 1 x – McqOptions

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1.	Find the middle terms in the expansion of \(\rm \left(x - \frac 1 x \right)^{18}\)
A.	18C9
B.	- 18C9
C.	- 18C10
D.	None of the above
Answer» C. - 18C10

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