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If one root of x^(2) - x - k = 0 is squa...

If one root of `x^(2) - x - k = 0` is square of the other, then k =

A

`2 +- sqrt(3)`

B

`3 +- sqrt(2)`

C

`2 +- sqrt(5)`

D

`5 +- sqrt(2)`

Text Solution

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The correct Answer is:
C
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OBJECTIVE RD SHARMA ENGLISH-QUADRATIC EXPRESSIONS AND EQUATIONS -Exercise
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  12. If x, a, b, c are real and (x-a+b)^(2)+(x-b+c)^(2)=0, then a, b, c are...

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  13. If the roots of the equation (a^2+b^2)x^2-2b(a+c)x+(b^2+c^2)=0 are e...

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  14. If a, b,c are all positive and in HP, then the roots of ax^2 +2bx +c=0...

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  16. If the roots of the equation x^2+2a x+b=0 are real and distinct and th...

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  18. Let alpha "and " beta be the roots of the equation ax^(2)+bx+c=0. Let ...

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  19. ifa=cos(2pi//7)+isin(2pi//7) , then find the quadratic equation whose ...

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  20. The integral value of for which the root of the equation m x^2+(2m-1)x...

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