# Question #a6708

##### 2 Answers

Jul 19, 2016

#### Answer:

#### Explanation:

Expression

Let us note that for the poly. in

the sum of the co-effs. of odd-powered terms

the sum the the co-effs. of even-powered terms

Therefore,

Now,

The Exp.

Jul 19, 2016

#### Answer:

#### Explanation:

Calling

we can verify that

so

or

or

Finally