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Wednesday, July 05, 2006

1 = 2?!?!??!?!?!?!

can u find what is wrong with these mathematical equations?

x = 2
x(x-1) = 2(x-1)
x²-x = 2x-2
x²-2x = x-2
x(x-2) = x-2
x = 1


there is a perfectly good explanation... if someone can prove it to me that person gets a cookie for the day...

3 comments:

Unknown said...

not exactly the answer i was looking for...

there's a clearer explanation

Anonymous said...

x(x-1) = 2(x-1)
x^2 - x = 2x - 1
x^2 - x - 2x = -1
-x^2 + 3x = 1
-x (x-3) = 1

evaluate: x = 2
-(2)(2-3) = (-4)+6 = 2

2 =\= 1

technically, you never said x=2 is the condition for which this equation exists, so x=2 is just some random thing completely unrelated.

cookie!!!!!

Unknown said...

dood... you guys BOTH suck... go back to math class...

by multiplying both sides by (x-1) you turn the statement into a quadratic, and what do all quadratics have? 2 roots...

so re-evaluate it and you will get the quadratic:

x² - 3x + 2 = 0
(x - 2)(x - 1) = 0
therefore: x = 2, and x = 1 to satisfy the equation...

*eats the cookie right in front of lorrie and trev*