mjk369 mjk369
  • 11-07-2016
  • Mathematics
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How do you work out; 6 minus square root5 / 1 - square root 5

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apologiabiology
apologiabiology apologiabiology
  • 11-07-2016
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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