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vipul92

  • 3 years ago

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

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  1. Ahaanomegas
    • 3 years ago
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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 \[ \dfrac {1}{x} = \dfrac {1}{7+4\sqrt{3}} = \frac {7-4\sqrt{3}}{(7+4\sqrt{3})(7-4\sqrt{3})}. \]

  2. vipul92
    • 3 years ago
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    sry frnd but it's become too deficult

  3. vipul92
    • 3 years ago
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    so it is wrong ans.

  4. RadEn
    • 3 years ago
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    4

  5. vipul92
    • 3 years ago
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    right ans.

  6. RadEn
    • 3 years ago
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    do u know how come it ?

  7. vipul92
    • 3 years ago
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    yes

  8. RadEn
    • 3 years ago
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    hehe,, good

  9. vipul92
    • 3 years ago
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    but you looking smart person

  10. RadEn
    • 3 years ago
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    sometimes ^^

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

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