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Which of the following is a quadratic eq...

Which of the following is a quadratic equation?

A

`x^(3) - 6x^(2) + 2x - 1 =0`

B

`x^(2) + 1/x^(2) = 2`

C

`x + 1/x =3`

D

`(x + 1) (x + 2) (x + 3) = 0`

Text Solution

Verified by Experts

The correct Answer is:
C
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VGS PUBLICATION-BRILLIANT-QUADRATIC EQUATIONS-OBSERVATION BITS TO SOLVE VARIOUS BITS GIVEN IN THE PUBLIC EXAMINATION
  1. The adjacent diagram indicates…..

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

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

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

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

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

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

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

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

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

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

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

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

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  14. Which of the following is a quadratic equation?

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

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  16. Which of the following quadratle. Equations the roots are equal?

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  17. The quadratic polynomial having 1/3 and 1/2 as its zeroes, is…..

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  18. If x^(2) - px + q = 0 (p,q in R and p ne 0, q ne 0) has distinct real ...

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  19. In a quadratic equation ax^(2) + bx + c = 0 "if" b^(2) - 4ac gt 0 then...

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  20. If a number is 132 smaller than its square, then the number is

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