Simplifying Expressions: Understanding 1/4k

[Shackleford]

I'm not seeing how you get 1/4^k = (1/2)^k(1/2)^k(1/2)

I understand why you can factor out the (1/2). It's in each term of the sum.

http://i111.photobucket.com/albums/n149/camarolt4z28/Untitled-2.png?t=1297227186

I haven't really looked at this crap in four years.

 

[Pengwuino]

That's not what they have. Although you can factor out the 1/2 because of the "+1" in the denominator of the expression.

 

[Shackleford]

That's not what they have. Although you can factor out the 1/2 because of the "+1" in the denominator of the expression.

Yeah, I got the +1 part. I feel silly for not immediately following their steps.

(2²)^k?