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If x2-3x+1=0 then what is the value of x2-1x2?
Here, x2-3x+1=0
⇒
∴ x+1x = 3
Now, x+1x2=x+1x2-4.1x=32-4=5
∴x+1x =5
So, x2-1x2=x+1xx-1x=35
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