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algebra

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I get confused when solving for some of the fractions in my problem. how would you solve for 1+(-2/(sqroot 5))? I just need a refresher on the order of operations for it. Thanks!

  • algebra -

    when you have a term squareroot (for example sqrt(x))in the denominator, multiply it with itself such that the multiplier is equal to one ( sqrt(x)/sqrt(x) ) to remove the squareroot,, in this problem:
    1+(-2/(sqroot 5))
    1+(-2/(sqroot 5))*(sqrt(5)/sqrt(5))
    1+{[-2*sqrt(5)]/5}
    therefore:
    {[5-2*sqrt(5)]/5}

    so there,, :)

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