1.

If `x=(1)/(5+2sqrt(6))` , then `x^(2)-10x+1=`_______.A. 1B. `-1`C. 1D. 10

Answer» Correct Answer - C
`x=(1)/(5+2sqrt(6))`
`x=(5-2sqrt(6))/(25-24) =x =5-2sqrt(6)`
`(1)/(x)=5+2sqrt(6) implies x+(1)/(x)=10`
`x^(2)+1=10x implies x^(2) -10x+1=0`


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