1.

`x/(2x^(2)+5x+2)=1/6` तो `(x+1/x)` का मान क्या होगा?A. `2`B. `1/2`C. `-1/2`D. `-2`

Answer» Correct Answer - B
`x/(2x^(2)+5x+2)=1/6`
`(x/x)/(2(x^(2))/x+(5x)/x+2/x)=1/6`
`implies 1/(2x+2/x+5)=1/6`
`implies 2(x+1/x)+5=6`
`=6-5=2(x+1/x)`
`implies1-2(x+1/x)`
`implies x+1/x=1/2`


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