Applying Binomial Theroem

Using the equation;

I must apply the binomial theroem to; And ,

In order to show that

Also, x is very small comapared to so,

What Ive done so far is,

So, does?

If so, could someone show me some working because I cant quite get to the right answer. Any help will be greatly appreciated, thanks.

Re: Applying Binomial Theroem

Quote:

Originally Posted by

**johnkash** Using the equation;

I must apply the binomial theroem to;

And

,

In order to show that

Also, x is very small comapared to

so,

What Ive done so far is,

So, does?

If so, could someone show me some working because I cant quite get to the right answer. Any help will be greatly appreciated, thanks.

You have a bit of an algebra error

Then the binomial series is

In both series you shouldn't have the factors of to the seventh and thirteenth power.

Re: Applying Binomial Theroem

So are you saying that they should be? and