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The roots of the each of the following q...

The roots of the each of the following quadratic equations are real and equal, find k.
`3y^(2)+ky+12=0`

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The correct Answer is:
(i) `k=-12 or k=12`
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TARGET PUBLICATION-QUADRATIC EQUATIONS-Practice set 2.5
  1. alpha, beta are roots of y^(2)-2y-7=0 find, (i) alpha^(2)+beta^(2) "...

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  2. alpha, beta are roots of y^(2)-2y-7=0 find, (i) alpha^(2)+beta^(2) "...

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  3. The roots of the each of the following quadratic equations are real an...

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  4. For what value of k, are the roots of the quadratic equation kx (x-2) ...

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  5. Fill in the gaps and complete. (i)

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  6. Fill in the gaps and complete. (ii)

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  7. Fill in the gaps and complete. (iii)

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  8. Find the value of discriminant. x^(2)+7x-1=0

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  9. Find the value of discriminant. 2y^(2)-5y+10=0

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  10. Find the value of discriminant. sqrt(2)x^(2)+4x+2sqrt(2)=0

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  11. Determine the nature of roots of the following quadratic equations. ...

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  12. Determine the nature of roots of the following quadratic equations. ...

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  13. Determine the nature of roots of the following quadratic equations. ...

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  14. Form the quadratic equation from the roots given below. 0 and 4

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  15. Form the quadratic equation from the roots given below. 3 and -10

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  16. Form the quadratic equation from the roots given below. 1/2 and (-1)...

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  17. Form the quadratic equation from the roots given below. 2-sqrt(5) an...

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  18. Sum of the roots of a quadratic equation is double their product. Find...

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  19. alpha, beta are roots of y^(2)-2y-7=0 find, (i) alpha^(2)+beta^(2) "...

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  20. alpha, beta are roots of y^(2)-2y-7=0 find, (i) alpha^(2)+beta^(2) "...

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