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18 July, 04:50

How do you work out; 6 minus square root5 / 1 - square root 5

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  1. 18 July, 05:00
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    Remember difference of 2 perfect squares?

    we do the same for denom, to get the √5 to 5

    1-√5 times 1+√5=1-5

    so what we do is

    (6-√5) / (1-√5) times (1+√5) / (1+√5) =

    (1+5√5) / (1-5) =

    (1+5√5) / - 4=

    (-1-5√5) / 4
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