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Math Help - Can you help simplify?

  1. #1
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    Can you help simplify?

    It's hard to type this expression, the 5's 2's and -2 in red are exponents. Please help simplify: (2a5b2/4a5b-2) -4
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  2. #2
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    Quote Originally Posted by jay1 View Post
    It's hard to type this expression, the 5's 2's and -2 in red are exponents. Please help simplify: (2a5b2/4a5b-2) -4
    Is this the expression?

     \frac{2a^5b^2}{4a^5b^{-2}}-4 <br />
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  3. #3
    Super Member bigwave's Avatar
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    lets see you try the first step
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  4. #4
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    You should consider the following


     a^m\div a^n = a^{m-n}
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  5. #5
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    Yes pickslides, the above is the expression...tI'm having trouble sorting thru..thanks much
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  6. #6
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    Is the answer b16/2?
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  7. #7
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    Here's one I prepared earlier

     \frac{3a^4b^3}{9a^4b^{-1}}-3

    first cancelling the coefficents 3 and 9 we get

     \frac{a^4b^3}{3a^4b^{-1}}-3

    a^4 is similar to both top and bottom as they cancel completely

     \frac{b^3}{3b^{-1}}-3

    Now lets take care of the b terms with the rule a^m\div a^n = a^{m-n}

    \frac{b^{3-(-1)}}{3}-3

    finally

    \frac{b^4}{3}-3

    and making a common denominator of 3 in both terms gives

    \frac{b^4-9}{3}

    Now use this example to finish yours!
    Last edited by pickslides; December 16th 2009 at 06:59 PM. Reason: bad latex
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