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The difference between two roots of t...

The difference between two roots of the equation `x^3 -13 x^2 + 15 x+189 =0` is 2 then the roots of the equation are

A

`-3,7,9`

B

`-3,-1,-9`

C

`3,5,7`

D

`-3,-1,9`

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A
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AAKASH SERIES-THEORY OF EQUATIONS-EXERCISE-II
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  3. The difference between two roots of the equation x^3 -13 x^2 + 15 ...

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  4. If two roots of x^3 - 9x^2 + 14 x +24 =0 are in the ratio 3:2 t...

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  5. If - 1 + i is a root of x^(4) + 4x^(3) + 5x^(2) + 2x + k = 0 then k =

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  6. If the roots of x^4 - 8x^3 + 14 x^2 + 8x - 15=0 are in A.P t...

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  7. If the roots of x^4 +5x^3 - 30 x^2 - 40 x+64=0 are in G.P then...

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  8. If the sum of two of the roots of x^4 -2x^3 -3x^2 +10 x-10=0 i...

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  9. the roots of the equation x^4 -6x^3 + 18x^2- 30 x +25 =0 are of...

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  10. Assertion (A) : If 1,2,3 are the roots of ax^3 + bx ^2 +cx +d=0 ...

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  11. If the product of two of the roots of x^4 - 5x^3 + 5x^2 + 5x -6=...

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  12. The equation x^3 -3qx +2r =0 has a repeated root then

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  13. If there is a multiple root of order 3 for the equation x^4 ...

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  14. The difference of the irrational roots of the equation x^5 -5x^4...

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  15. If alpha , beta , gamma are the roots of x^3 +2x^2 +3x +8=0 th...

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  16. If alpha , beta , gamma are the roots of the equation x^3 - px^...

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  17. If alpha, beta , gamma are the roots of the equation x^(3)+4x+1=0, the...

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  18. If alpha , beta , gamma are the roots of 2x^3 -2x -1=0 the sum ...

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  19. sum (1)/(alpha^2 beta^2)

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