1.

यदि `x^(2)-3x+1=0` है तो `x^(2)+x+1/x+1/(x^(2))` का मान ज्ञात करें।A. 10B. 2C. 6D. 8

Answer» Correct Answer - A
`x^(2)-3x+1=0`
`implies x^(2)+1=3x`
`x+1/x=3`
Squaring both sides
`implies x^(2)+1/(x^(2))+2=9`
`x^(2)+1/(x^(2))=7`
`x^(2)+1/(x^(2))+x+1/x`
`=7+3=10`


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