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If ` alpha , beta ` are the roots of ` x^2+ax -b=0` and ` gamma , sigma ` are the roots of `x^2 + ax +b=0` then ` (alpha - gamma )(beta - gamma )( alpha - sigma )( beta - sigma )=`

A

`b^2`

B

`2b^2`

C

`3b^2`

D

`4b^2`

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The correct Answer is:
D
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DIPTI PUBLICATION ( AP EAMET)-QUADRATIC EXPRESSIONS-EXERCISE 1A (QUADRATIC EQUATIONS)
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  5. If alpha , beta are the roots of x^2 + px +1=0 and gamma , d...

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  6. If alpha , beta are the roots of ax ^2+2bx +c=0 and alpha + si...

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  7. alpha , beta are the roots of ax ^2+bx +c=0 and gamma , sigma...

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  8. The ratio of the roots of the equation ax ^2 + bx +c=0 is same ...

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  9. alpha , beta are the roots of ax ^2+bx +c=0 and gamma , sigma...

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  10. Let p and q be the roots of x^2 - 2x + A =0 and let r and s b...

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  17. IF x1 and x2 are the real roots of the equation x^2 - kx +c=...

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  18. If one root of the equation I x ^2 - 2(1+i) x+ (2-i) =0 is 2- I ...

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