मराठी

If x = 5+26, then what is the value of xx(x+1x)? -

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प्रश्न

If x = `5 + 2sqrt6`, then what is the value of  `(sqrt"x" + 1/sqrt"x")`?

पर्याय

  • `2sqrt3`

  • `3sqrt2`

  • `2sqrt6`

  • `6sqrt2`

MCQ

उत्तर

`2sqrt3`

Explanation:

x = `5 + 2sqrt6`

`sqrt"x" = sqrt3 + sqrt2`

⇒ `sqrt"x" + 1/sqrt"x" = sqrt3 + sqrt2 + 1/(sqrt3 + sqrt2)`

⇒ `sqrt"x" + 1/sqrt"x" = sqrt3 + sqrt2 + sqrt3 - sqrt2`

= `2sqrt3`

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Simplification (Entrance Exam)
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