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Math Help - Fractions

  1. #1
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    Fractions

    Yea umm a little help on adding and subtracting rational expressions.

    I think I did this right . .

    2x-4/x2+8x-20

    2(x-2)/(x-2)(x+10)

    2/(x-10)

    Is this right and If so I kinda need help on this one too

    x2+6x/10*4/x2-36
    Last edited by ThePerfectHacker; May 13th 2007 at 07:13 AM.
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  2. #2
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    Re:

    Quote Originally Posted by thebest View Post
    Yea umm a little help on adding and subtracting rational expressions.

    I think I did this right . .

    2x-4/x2+8x-20

    2(x-2)/(x-2)(x+10)

    2/(x-10)
    RE:
    Attached Thumbnails Attached Thumbnails Fractions-1.gif  
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  3. #3
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    Quote Originally Posted by thebest View Post

    x2+6x/10*4/x2-36
    Is this a typo?
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  4. #4
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    Quote Originally Posted by thebest View Post
    ...

    Is this right and If so I kinda need help on this one too

    x2+6x/10*4/x2-36
    Hello,

    if I understand the problem correctly it reads:
    Code:
    x + 6x       4       
    -------- * ------- = 
       10      x -36
    
    x(x + 6)        4          2x   
    -------- * ---------- =  -------
       10      (x+6)(x-6)     5(x-6)
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