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Math Help - solve equation for two un-knows

  1. #1
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    solve equation for two un-knows

    find the value of a and b,

     \frac{4}{5 +\sqrt{2}} = a +b\sqrt{2}

    I dont know how to do this, any help appreciated.
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  2. #2
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    Re: solve equation for two un-knows

    Since the fraction has a radical in the denominator, you want to simplify by multiplying both the numerator and the denominator by 5-\sqrt{2}
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