Question

if x= 2+ root 3 ,find the value of (x^2+1 byx^2)​

Answer 1

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Answer 2

hey:

given here:

x=2+√3.

find here:

x^2+1/x^2=?

so,

==>1/x=1/(2+√3)

==>1/x=(2-√3)/(2+√3)2-√3)

==>1/x=(2-√3)/4-3

==>1/x=2-√3.

now,

==>x^2+1/x^2=(2+√3)^2+(2-√3)^2

==.>x^2+1/x^2=4+2√3+3+4-2√3+3

==>x^2+1/x^2=14

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