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IB math SL - Binomial Theorem

How can we find the coefficient of the term of the expansion of ?

Thanks!

How can we find the coefficient of the term of the expansion of ?

Thanks!

- Brynlee
**Posts:**0**Joined:**Mon Jan 28, 2013 8:10 pm

The general term of a binomial expansion of the form is given by the following formula:

Concerning this question the general term is :

(1)

The term that must be examined is .

So,

Then we can easily calculate the coefficient of this term by plugging in into equation (1).

Hope these help!!

- miranda
**Posts:**268**Joined:**Mon Jan 28, 2013 8:03 pm

Thanks miranda!!

- miranda
**Posts:**268**Joined:**Mon Jan 28, 2013 8:03 pm

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