1.

यदि `(x-1/x)^(2)=3` तो `x^(6)+1/(x^(6))` का मान निकालेंA. 90B. 10C. 100D. 120

Answer» Correct Answer - B
`(x-1/x)^(2)=3`
`x-1/x=sqrt(3)`
`x-1/x=sqrt(3)`
Now `x^(2)+1/(x^(2))=(sqrt(3))^(2)+2`
`x^(2)+1/x=5`
again `(x^(2))^(3)+(1/(x^(2)))^(3)=(5)^(3)-3xx5`
`x^(6)+1/(x^(6)=125-15)=110`


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