Question

If x=3+√8,then find the value of x+1/x.

Answer 1

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◾️If x=3+√8,then find the value of x+1/x.

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$\huge{\boxed{6}}$

Explanation:

$\implies$x = 3+√8

$\implies$1/x = 1/(3+√8) * (3-√8) / (3-√8)

$\implies$ (3-√8)/9-8

= 3-√8

Hence,

$\implies$x+1/x

$\implies$3+√8+3-√8

$\implies$ 6

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Answer 2

Answer:

6

Step-by-step explanation:

=x=3+_/8

=x+1/x=3+_/8+1/3+_/8 ratiobalising denominator

=3+_/8 + 3-_/8/3+_/8×3-_/8

=3+_/8 + 3-_/8/3²-_/8²

=3+_/8+3-_/8/1=3+3=6