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March 26, 2017

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3-square root 2/ 1+square root 2

  • algebra - ,

    This is not trig.

    (3 - sqrt2)/(1 + sqrt2)
    = (3-sqrt2)(1-sqrt2)/[(1-sqrt2)(1+sqrt2)]
    = [3 - 4sqrt2 +2]/(1-2)
    = (5 -4sqrt2)/-1
    = 4sqrt2 -5

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