1-(X+h)-1-X2+(X-H) 2-X

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- Jun 10th 2012, 08:35 PMzbest1966simplify expressiom
__1-(X+h)__-__1-X__2+(X-H) 2-X

- Jun 10th 2012, 09:48 PMProve ItRe: simplify expressiom
First of all, are you using h and H to represent the same thing? If so, be consistent, either use all "h" or all "H".

Next, is this your expression? $\displaystyle \displaystyle \begin{align*} \frac{1 - (x + h)}{2 + (x - h)} - \frac{1 - x}{2 - x} \end{align*}$?

Learning a little LaTeX would help everyone... - Jun 11th 2012, 08:25 PMzbest1966Re: simplify expressiom
[

__1-(x-h)](2-x) - (1-x)[2+(x+h)]__

2+(x+h) 2+x

my ans is__x^-5__

(2+x+h)(2+x) - Jun 11th 2012, 08:26 PMzbest1966Re: simplify expressiom
im lost

- Jun 12th 2012, 05:14 AMReckonerRe: simplify expressiom
- Jun 12th 2012, 06:08 AMzbest1966Re: simplify expressiom
__2x^2(x-1)__

(2+x+h)(2+x) - Jun 12th 2012, 06:47 AMskeeterRe: simplify expressiom
you keep changing signs in subsequent posts ... I get the feeling that this original expression has more than one sign typo.

is this what you originally meant ???

$\displaystyle \frac{1-(x+h)}{2+(x+h)} - \frac{1-x}{2+x}$

if not, fix it so that maybe someone can provide you with meaningful guidance. - Jun 12th 2012, 06:51 AMzbest1966Re: simplify expressiom
Yes thats the orginal problem

- Jun 12th 2012, 06:58 AMReckonerRe: simplify expressiom
The work you showed in your last post is a good first step. Just keep going...

$\displaystyle \frac{1-(x+h)}{2+(x+h)} - \frac{1-x}{2+x}$

$\displaystyle =\frac{\left[1-(x+h)\right](2+x)}{\left[2+(x+h)\right](2+x)} - \frac{\left[2+(x+h)\right](1-x)}{\left[2+(x+h)\right](2+x)}$

$\displaystyle =\frac{\left[1-(x+h)\right](2+x)-\left[2+(x+h)\right](1-x)}{\left[2+(x+h)\right](2+x)}$

Are you able to do the multiplication? - Jun 12th 2012, 07:04 AMzbest1966Re: simplify expressiom
i did that my ans

__2x^2(x-1)__(2+x+h)(2+x)

- Jun 12th 2012, 07:13 AMReckonerRe: simplify expressiom
That's not what I'm getting. It would be helpful if you showed the actual work you did to get that answer...

$\displaystyle \frac{\left[1-(x+h)\right](2+x)-\left[2+(x+h)\right](1-x)}{\left[2+(x+h)\right](2+x)}$

$\displaystyle =\frac{(2+x)-\left(x^2 + 2h + 2x + hx\right)-(2-2x)-\left(x - hx - x^2 + h\right)}{\left[2+(x+h)\right](2+x)}$

$\displaystyle =\frac{2+x-x^2-2h-2x-hx-2+2x-x+hx+x^2-h}{\left[2+(x+h)\right](2+x)}$

Now combine like terms. - Jun 12th 2012, 07:18 AMzbest1966Re: simplify expressiom
Thank you, that was a killer