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vipul92

x=sqrt(7+4sqrt3) then (x+(1/x))=?

  • one year ago
  • one year ago

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  1. Ahaanomegas
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    \[ x + \dfrac {1}{x} = \dfrac {x^2 + 1}{x} \]You can use that. Or: You could just do it the regular way. You would do \[ \dfrac {1}{x} = \dfrac {1}{7+4\sqrt{3}} = \frac {7-4\sqrt{3}}{(7+4\sqrt{3})(7-4\sqrt{3})}. \]

    • one year ago
  2. vipul92
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    sry frnd but it's become too deficult

    • one year ago
  3. vipul92
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    so it is wrong ans.

    • one year ago
  4. RadEn
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    4

    • one year ago
  5. vipul92
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    right ans.

    • one year ago
  6. RadEn
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    do u know how come it ?

    • one year ago
  7. vipul92
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    yes

    • one year ago
  8. RadEn
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    hehe,, good

    • one year ago
  9. vipul92
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    but you looking smart person

    • one year ago
  10. RadEn
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    sometimes ^^

    • one year ago
  11. Ahaanomegas
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    Dude, you have to read everything someone writes. I didn't finish the solution. I only gave a hint.

    • one year ago
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