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Math Help - Simplifying help.

  1. #1
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    Simplifying help.

    Can someone show me how to simplify this.

     6x\ln(1-xy)-\frac{3x^2y}{1-xy}+\frac{3x^2-2x^3y^2}{(1-xy)^2}

    I have had a few goes but I can't remember how to make them the same denominator. and keep coming up with a mash of rubbish , your help is appreciated.
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  2. #2
    Super Member Matt Westwood's Avatar
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    For a start, note that in the term on the RHS you've got a factor of 1-xy in the top and the bottom, so you can cancel that out of top and bottom to make it yay simpler. That means the 2nd and 3rd terms *do* have a common denominator. That should help for a start.
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  3. #3
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    so
     \frac{3x^2-2x^2y}{1-xy}??
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  4. #4
    Super Member Matt Westwood's Avatar
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    Actually, now I look at it I may be wrong! I don't think that there is such a common factor after all.

    So, take your initial equation and multiply top and bottom of the middle term by 1-xy to put it over a common denominator. Then it's a matter of sorting out the stuff on top and seeing whether there's a factor.
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