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Thread: Rational Expressions and Equations Help me please?

  1. November 14th 2012, 10:38 AM #1
    adamk
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    Rational Expressions and Equations Help me please?

    Hi Im new to this forum as of like 5 mintues ago. I need help with understanding how to go about doing this math problem I have attached the math problem I can not figure out. The problem I cant figure out is # 7. Can someone please assist me.
    Attached Thumbnails Attached Thumbnails Rational Expressions and Equations Help me please?-2012-11-14_14-29-58_185.jpg  
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  2. November 14th 2012, 11:05 AM #2
    abender
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    Re: Rational Expressions and Equations Help me please?

    What (least) common denominator would you use if you were tasked with simplifying the sum of the two expression?

    That is, how would you simplify \frac{4}{x-2}+\frac{6}{x+2} so that there is just one fractional term, i.e., \frac{top}{\color{blue}bottom} ?

    The \color{blue}bottom in your final simplification is the least common denominator.

    The answer is (x-2)(x+2) , but do you understand this?
    Last edited by abender; November 14th 2012 at 11:33 AM.
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« How did they get from the second expression to the third? (simplification) | Algebra help »

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