1.

यदि `x+1/x=1` है तो `(x^(2)+3x+1)/(x^(2)+7x+1)` का मान ज्ञात करें।A. `1//2`B. `3//7`C. `2`D. `3`

Answer» Correct Answer - A
Given `x+1/x=1`………..i
Find `(x^(2)+3x+1)/(x^(2)+7x+1)=?`
From equation i
`implies x+1/x=1`
`implies x^(2)+1=x`
`implies((x^(2)+1)+3x)/((x^(2)+1)+7x)`
`implies (x+3x)/(x+7x)implies(4x)/(8x)=1/2`


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