if x=2+√3, then find x+1/x
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Hey mate !! might this help you so let's begin
Given
x= 2+√3
to find x+1/x
Now ,
1/x = 1/2+√3 × 2-√3/2-√3
= 2-√3/2²-(√3)²
= 2-√3/4-3
= 2-√3/1= 2-√3
again,
x+1/x = 2+√3+2-√3
( +,-) cancel out
= 2+2
x+1/x = 4
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