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#1 2013-10-20 04:19:50

ninjaman
Member
Registered: 2013-10-15
Posts: 41

2-x = x-2, is this correct?

hello
I have to do another partial fraction but with (2-x)^2

im not sure if its

when x = 2-, or
when x = -2

it looks like (+2-x), it doesn't look like a minus. could it be that -x is treated as -1 so it becomes,

when x = +1 so it would be (2-+1) leaving just 1.

is this right im not sure.

I also have (1+x) and im not sure what to do with that either. can I just swap them like (x+1) that doesn't seem right though. after using 6 for x I get 7 either way. 1+6 or 6+1 but this doesn't work for the 2- as the answer would be the same just one would be minus the other positive. unless im completely confused on the matter......somethings cooking, smells like brain!!!

please help!!!

cheers
simon:)

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#2 2013-10-20 04:36:50

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,739

Re: 2-x = x-2, is this correct?

I also have (1+x) and im not sure what to do with that either. can I just swap them like (x+1)

You can say ( x + 1 ) = ( 1 + x ). It does work for -2.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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#3 2013-10-20 04:56:20

ninjaman
Member
Registered: 2013-10-15
Posts: 41

Re: 2-x = x-2, is this correct?

im not sure how to write it, when x = 2-, is this correct

so would it be 2++1

so if I had (2-x)(1+x) and x = 2+ (instead of 2-)

it would be (2-+2) and (1++2)

is this correct, please could you point me in the right direction.

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#4 2013-10-20 05:10:29

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 84,739

Re: 2-x = x-2, is this correct?

im not sure how to write it, when x = 2-, is this correct

The sign goes in front like this -2. That is negative 2.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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