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Math Help - What should I do??

  1. #1
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    What should I do??

    Hi guys...need your help again.
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by Alienis Back View Post
    Hi guys...need your help again.
    isn't r the rate of interest? just plug in r = 0.12 (the decimal equivalent of 12%) and calculate
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  3. #3
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    That's a great help

    Now how do I factor the right side?
    Just give me a clue.
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  4. #4
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by Alienis Back View Post
    Now how do I factor the right side?
    Just give me a clue.
    it should be 1 + r + \frac {r^2}4 in the brackets, right?

    if so, first factor out the 1/4, you get \frac 14 (4 + 4r + r^2) = \frac 14(r^2 + 4r + 4)

    now, can you factor the inside? you should be able to
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