Proof using binomial theorem
Hi
Please take a look at the following problem:
http://i50.tinypic.com/2w5lkpd.jpg
Could someone help me out with a hint on how to prove this? I have worked out that this equation would equal 1, when x=1 and y=-2, but I could use some help on how to prove it.
Thanks in advance
Re: Proof using binomial theorem
Quote:
Originally Posted by
zzizi 
If 
is even then
^n=\sum\limits_{k = 0}^n {\left( { - 2} \right)^k }\binom{n}{k} )
Re: Proof using binomial theorem
You made it too easy (Blush)
Thank you for your help Plato!
Re: Proof using binomial theorem
Yeah, Plato has a way of doing that!
