Question

If x = 2√2+√7,then
1/2(x+1/x)?
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Answer 1

Given x =√7+4√3

1/x = 1/(√7+4√3) = (4√3-√7)/(√7+4√3) (4√3-√7) , multiplying numerator and denominator by (4√3-√7)

1/x = (4√3-√7)/41

x+1/x = (√7+4√3) + (4√3-√7)/41

On simplification (56+8√21)/(√7+4√3).

Based on the problem given this should be the answer.

However the first part of x generally given as an integer, and the answer is simple.

Like if 7 is given in place of √7 then the answer would be 14.

Answer 2

Answer:

sorry can't understand your question post