Thread: Can 2 = 1?
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Old 08-29-2008, 02:24 AM   #32 (permalink)
Chaotix
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Quote:
Originally Posted by Xynh View Post
Well, its back to school, and the first thing I learn from my math teacher is that 2 equals 1. He told the whole class to stop his proof if anyone can find a mathematical error. Well, no one did. Here's what he did:

Let A = B.
Multply both sides by A.
Now its: A^2 = AB.
Subtrace both sides by B^2.
Now its: A^2 - B^2 = AB - B^2.
When you factor it, it becomes: (A + (A - = B (A - .
Simplify it, making it: A + B = B.
Now, since A = B, you can make it: B + B = B.
Now to simplify: 2B/B = B/B.
Anything divided by itself is one, so the final equation would be: 2 = 1.

I cannot find an error in this equation, so.. What the hell?

also, since, A = B, then A - B = 0, therefore instead of simplifying into A + B = B, it simplifies into 0 = 0
this is an example of X = R, which stand for "x is an element of all real numbers"
it means in the equation of A = B, no matter what numbers u plug in as A or B, it would always come out as 1 = 1, 2 = 2, etc...

i learned this in my algebra-II class.... yesterday....

Last edited by Chaotix; 08-29-2008 at 02:28 AM.
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