1 = 2

[Jurhum]

check the attachment

I know there is a mistake but I can't figure it out. I'm bad at math... can someone tell me how is that possible?

 

[CalcuoCuchicheo]

I'm pretty sure that's wrong.

You can't just cross out those final Xs.

 

[Jurhum]

you mean the 1x = 2x ? But why not?

 

[CalcuoCuchicheo]

Well in an algebraic equation you almost always are looking to find what the letter equals.

1X=2X is really X=2X.

You can't just cancel out those Xs - at least, I've never seen it done.

And the fact that 1 cannot equal 2 confirms to me that this cancellation is impossible.

 

[Rukas]

Even if you could cross out those brackets (you cant), you're left with x = x + x, which DOES NOT mean 1 = 2. x could be 0.

But like I said, you cant cancel the brackets like that. You cant simplfy x^2 - x^2 = x^2 - x^2 to x = x like you're trying to do. Why did you cross the brackets? Cause they are the same? Well in that case, x^2 - x^2 is the same to begin with so using your theory you could just cross both sides out and get 0. And in reality you'd simplify both sides first, and find that x^2 - x^2 = 0, so the answer to the whole problem is simply 0.

So in short, you're method and answer are wrong.

Heres something that will fuck with you thought, 2 + 2 = 5 for large enough instances of 2.

 

[Khaled]

You stupid mothafuckas: you can't divide by zero
(x-x=0), cancelling the (x-x) factor is equivalent to dividing both sides by the factor...

maths 101

 

[The.Menace]

So in short, you're method and answer are wrong.

yup.

x-x=0..... so basically it says 0=0

 

[not really ken]

let me see the attachment again
i think this is possible. let me see the attach though

 

[Illuminattile]

How did they get, on the right hand side, x^ - x^2 = (x-x) [*] (x+x)?

(x-x) * (x+x) = x^2 + x^2 + x^2 - x^2

Isn't it?

 

[Jurhum]

^ how can I show u the attachment again? lol click on it again.

 

[not really ken]

^^what the hell, I can't see the attatchment
let me in Illuminattile, it's me Ken man
let me in brothers let me in

edit* its showing now. im going to look at ti in a bit need to catch a train now

 

[Jurhum]

ok here.. this is the first step, X^2 - X^2 = X ^2 - X^2

Now step two: x(x-x) = (x-x)*(x+x)
cross out the (x-x) and you are left with

1x = x+x which is 2x

1x = 2x cross the x's out and u get 1 = 2

i don't know lol...

 

[Rukas]

^^ Dude, drop it, you're just making yourself look dumb now.

X^2 - X^2 = X ^2 - X^2
is 0 = 0

Case closed. Even if it wasnt, your mathematic methods are wrong.

Just stop it.

 

[2pac4prez2004]

wow, i must of fell asleep in maths, i aint got clue what ya'll talking about [looks for less intelligent thread]

 

[Jurhum]

Rukas, lol, ok

 

[Rukas]

<< Im in my second year of a Mathematics and Computer Science degree, dont beat yourself up about it

 

[devils_advok8]

I cant view the attachment

 

[Cooper]

me neither, but i seen it before.

 

[not really ken]

its bullshit. in the end it says 1x = x+x but:

1x = x <-so knocking the x out doesnt = 1 it equals 0