anonymous
  • anonymous
x=sqrt(7+4sqrt3) then (x+(1/x))=?
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
\[ x + \dfrac {1}{x} = \dfrac {x^2 + 1}{x} \]You can use that. Or: You could just do it the regular way. You would do \[ \dfrac {1}{x} = \dfrac {1}{7+4\sqrt{3}} = \frac {7-4\sqrt{3}}{(7+4\sqrt{3})(7-4\sqrt{3})}. \]
anonymous
  • anonymous
sry frnd but it's become too deficult
anonymous
  • anonymous
so it is wrong ans.

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RadEn
  • RadEn
4
anonymous
  • anonymous
right ans.
RadEn
  • RadEn
do u know how come it ?
anonymous
  • anonymous
yes
RadEn
  • RadEn
hehe,, good
anonymous
  • anonymous
but you looking smart person
RadEn
  • RadEn
sometimes ^^
anonymous
  • anonymous
Dude, you have to read everything someone writes. I didn't finish the solution. I only gave a hint.

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