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If one root of 2x^(2) + kx - 6 "is" 2,"t...

If one root of `2x^(2) + kx - 6 "is" 2,"then" k = .....`

A

3

B

4

C

1

D

`-1`

Text Solution

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The correct Answer is:
D
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VGS PUBLICATION-BRILLIANT-QUADRATIC EQUATIONS-OBSERVATION BITS TO SOLVE VARIOUS BITS GIVEN IN THE PUBLIC EXAMINATION
  1. For what positive value of x the quadratic equation 4x^(2) - 9 = 0

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  2. Two angles are complementary. If the larger angle is twice the measure...

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  3. If one root of 2x^(2) + kx - 6 "is" 2,"then" k = .....

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  4. If the roots of x^(2) + 6x + 5 = 0 "are" alpha and beta "then" alpha +...

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  5. A quadratic equation, whose roots are 2 + sqrt 3 and 2 - sqrt 3 =

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  6. The adjacent diagram indicates…..

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  7. If alpha, beta "are the roots of" x^(2) - 10x + 9 =0, "then" |alpha - ...

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  8. Which one of the following figures shows the quadratic equation ax^(2)...

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  9. If 1 is a common root of ax^(2) + ax + 2 = 0 and x^(2) + x + b = 0 "th...

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  10. The number of diagonals for an n sided polygon is

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  11. A quadratic equation ax^(2) + bx + c = 0 has two distinct real roots, ...

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  12. The discriminant of the quadratic equation px^(2) + qx + r = 0 is….

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  13. The discriminant of 6x^(2) - 5x + 1 = 0 "is"

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  14. One root of the equation x-3/x=2 is……….

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  15. The quadratic polynomial, whose zeroes are sqrt 2 and -sqrt2 is

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  16. If the equation x^(2) + 5x + K = 0 has real and distinct roots, then….

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  17. The quadratic polynomial, whose zeros are 2 and 3, is…..

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  18. Observe the given rectangular figure, then its area in polynomial func...

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  19. Which of the following is a quadratic equation?

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  20. Observe the following graphs. Which as them are the graphs of q...

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