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Encyclopedia Galactica => Science => : th3g00n September 28, 2012, 07:01:53 PM

: Little Math Problem
: th3g00n September 28, 2012, 07:01:53 PM

I can't make heads or tails of it.

(4^x) x (16^2x-2) / (4^2x-3) x (128) = ?

NOTE: The (x) in the brackets are variables while those outside are multiplication signs. Anything in front of (^) is an index.

: Re: Little Math Problem
: z3ro September 28, 2012, 07:19:01 PM

euhh.. sorry for bad image quality  :-[

: Re: Little Math Problem
: th3g00n September 28, 2012, 07:29:15 PM

You are wrong dude.

EDIT: Finally got it. I just overlooked a minor detail(you too z3ro).

: Re: Little Math Problem
: z3ro September 28, 2012, 07:52:35 PM

really?  ???   what did I miss?  ???

: Re: Little Math Problem
: th3g00n September 28, 2012, 08:06:49 PM

(4^2x-3) becomes (2^4x) x (1/4^3).

: Re: Little Math Problem
: s3my0n September 28, 2012, 09:11:44 PM

Here's my method, love the powers of 2 there :P

(http://i1337.photobucket.com/albums/o673/s3my0n/IMG_20120929_030307.jpg)

: Re: Little Math Problem
: z3ro September 29, 2012, 04:50:16 AM

why is mine wrong?  :P   you got what as final answer?

: Re: Little Math Problem
: s3my0n September 29, 2012, 08:30:19 AM

Can't you see lol?

I got 2^(6x-9) as can be clearly seen from the image.

: Re: Little Math Problem
: th3g00n September 29, 2012, 08:57:39 AM

: s3my0n  September 29, 2012, 08:30:19 AM

I got 2^(6x-9) as can be clearly seen from the image.

The answer is 2^(6x-7)

: th3g00n  September 28, 2012, 08:06:49 PM

(4^2x-3) becomes (2^4x) x (1/4^3).

And this is the reason.

: Re: Little Math Problem
: s3my0n September 29, 2012, 09:50:01 AM

The answer is 2^(6x-9), check it by replacing x with any number, the original statement will equal to this one.

: Re: Little Math Problem
: z3ro September 29, 2012, 10:32:32 AM

yaa.got it. I missed a negative 7  :-[   lol  :P   i put + 7 instead