1.

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

Answer» Correct Answer - A
`x+2/x=1`
`x^(2)+2=x`
`x^(2)-x=-2`
`x-x^(2)=2`
`:.(x^(2)+x+2)/(x^(2)(1-x))=` divide & multiply by `x`
`implies((x^(2))/x+x/x+1/x)/((x^(2))/x(1-x))=(x+2/x+1)/(x(1-x))`
`implies x+(2/x+1)/(x-x^(2))=(1+1)/2=1`


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