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Math Help - Solve for A

  1. #1
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    Solve for A

    A= [(6.5+6.5√3)(6.5√3)]/2

    How would you solve this? I'm having trouble...could someone show the steps? I keep getting a different answer than what's in the book. Thanks.
    Last edited by eleventhhour; May 8th 2014 at 04:44 PM. Reason: sorry romsek! It should be A =
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  2. #2
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    Re: Solve for A

    Quote Originally Posted by eleventhhour View Post
    [(6.5+6.5√3)(6.5√3)]/2

    How would you solve this? I'm having trouble...could someone show the steps? I keep getting a different answer than what's in the book. Thanks.
    I think you mean simplify. There's nothing here to solve.

    $\dfrac{(6.5+6.5\sqrt{3})(6.5\sqrt{3})} 2=$

    $\dfrac{(6.5)^2\sqrt{3}+(6.5)^2(\sqrt{3})^2} 2$

    you should be able to finish from here.
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  3. #3
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    Re: Solve for A

    No, I meant solve. Sorry about that! I just forgot to add the A=
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  4. #4
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    Re: Solve for A

    Quote Originally Posted by eleventhhour View Post
    No, I meant solve. Sorry about that! I just forgot to add the A=
    well there's really still nothing to solve. The side that isn't A is just a number.
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  5. #5
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    Re: Solve for A

    Quote Originally Posted by eleventhhour View Post
    A= [(6.5+6.5√3)(6.5√3)]/2

    How would you solve this? I'm having trouble...could someone show the steps? I keep getting a different answer than what's in the book. Thanks.
    Romsek told you how to get the exact answer, which is not hard if you remember that $\sqrt{3}$ is just a number.

    However if the problem asks you for an answer correct to 2 decimals or something like that, it is not asking for an exact answer at all; it is asking for an approximate answer. Are you allowed to use a calculator or a computer for arithmetic computations?
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