ifa^2-2a-1=0 then find a-1/a,a+1/a,a^2+1/a^2
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the value of a-1/a is 2/a+1
the value of a+1/a is 2/a-1
the value of a^2+1/a^2 is 2,10/9
the value of a+1/a is 2/a-1
the value of a^2+1/a^2 is 2,10/9
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