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Math Help - Factoring

  1. #1
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    Factoring

    I'm just wondering how they factored this.

    =(4+t^2)^2(24)-(24t)2(4+t^2)2t/(4+t^2)^4

    =24(4+t^2)[(4+t^2)-4t^2]/(4+t^2)^4

    i have no clue how they got from the first line to the second line.
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  2. #2
    Bar0n janvdl's Avatar
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    Quote Originally Posted by johntuan View Post
    I'm just wondering how they factored this.

    =(4+t^2)^2(24)-(24t)2(4+t^2)2t/(4+t^2)^4

    =24(4+t^2)[(4+t^2)-4t^2]/(4+t^2)^4

    i have no clue how they got from the first line to the second line.
    Is it possible for you to just present that in a nicer way?
    If you have Office 2007, maybe you can create a Word doc? You don't seem to know LaTeX.
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  3. #3
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    anybody?
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  4. #4
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by johntuan View Post
    anybody?
    as janvdl indicated, we are not sure what you are talking about

    do you mean: \frac {24 \left( 4 + t^2 \right)^2 - 96t^2 \left( 4 + t^2 \right)}{\left( 4 + t^2 \right)^4} ?
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  5. #5
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    Im just wondering how they got to number 1 to number 2.
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  6. #6
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by johntuan View Post


    Im just wondering how they got to number 1 to number 2.
    they looked for what was common to the expression on the top and factored it out. 24 and (4 + t^2) was common to both terms on the top, so they pulled them out, and what is in the brackets is what is left after they factored out the common terms.
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