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    MsTaylor23's Avatar
    MsTaylor23 Posts: 41, Reputation: 1
    Junior Member
    		  
    #1

    Aug 20, 2007, 06:18 AM
    Simplifying Roots
    Square root (3)/(square root3 +square root2)

    I was thinking that both square roots of 3 would cross out and leave square root 2
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Aug 20, 2007, 06:31 AM
    No - as with all fractions, if you divide the numerator by something, you have to divide the denominator by the same thing. In this case you divided the numerator by sqrt(3) leaving 1, and the denominator also by sqrt(3) leaving 1 +sqrt(2)/sqrt(3)
    retsoksirhc's Avatar
    retsoksirhc Posts: 912, Reputation: 71
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    #3

    Aug 20, 2007, 06:32 AM
    That would only work if the denominator was sqr(3) * sqr(2). With addition, you would need to factor a sqr(3) out of both parts. Can't quite remember how to solve this one, but I know you can't just cancel them.
    Sorry :(
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