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`alpha, beta` are roots of quadratic equation such that ` alpha+beta=-4` and `alpha beta=-1`, then required equation is……….a)`x^2-4x-1=0` b)`x^2+4x-1=0` c)`x^2+4x+1=0` d)`x^2-4x+1=0`

A

`x^2-4x-1=0`

B

`x^2+4x-1=0`

C

`x^2+4x+1=0`

D

`x^2-4x+1=0`

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CHETANA PUBLICATION-Quadratic Equations-EXERCISE
  1. If the roots of ax^2+bx+c=0 are real and equal then.......a)b^2-4aclt0...

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  2. The value of discriminant of the equation x^2+x+1=0 is…………..a)-4 b)-3 ...

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  3. alpha, beta are roots of quadratic equation such that alpha+beta=-4 a...

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  4. The standard form of quadratic equation x-5/x=3x-7 is……….a)2x^2-8x+7=0...

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  5. What is the nature of roots of quadratic equation: 9x^2-12x+4=0? a)Rea...

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  6. Three times the square of natural number is 363 is written in the math...

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  7. Which of the following is not a quadratic equation? a)-5/3x^2=2x+9 b)(...

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  8. For quadratic equation the product of the roots alpha and beta=…………..a...

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  9. Write the formula: alpha^3+beta^3=…………….a)(alpha+beta)^3-3alphabeta(al...

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  10. If one root of quadratic equation is 5+sqrt 5,then the product of root...

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  11. If x=9 is one root of the quadratic equation x^2-11x+k=0, then find th...

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  12. If one root of the quadratic equation 3y^2-ky+8=0 is 2/3, then find th...

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  13. Determine whether the given values of x are the roots of given quadrat...

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  14. Which of the following is a quadratic equation? a)x-5/x=3x-9 b)x+3=0 c...

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  15. Which of the following is a quadratic equation? a)(x+3)(x-4)=0 b)x=9 c...

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  16. Which of the following is a quadratic equation? a)5/x-3=x^2 b)x^2=9 c)...

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  17. Which of the following is a quadratic equation? a)n^2-n+4=n^2 b)x^2=8...

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  18. Which of the following is a quadratic equation? a)x-3=4x^2 b)x+9=0 c)...

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  19. Write the quadratic equation m(m-7)=0 in ax^2+bx+c=0 form and find the...

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  20. Write the quadratic equation (x^2-7)/x=7 in ax^2+bx+c=0 form and find ...

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