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If alpha, beta "are the roots of" x^(2) ...

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

A

9

B

8

C

`-10`

D

10

Text Solution

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

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

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

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

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

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

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

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

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

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

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

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

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

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  15. Which of the following is a quadratic equation?

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

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

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

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

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

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