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If alpha+beta=-2 and alpha^3+beta^3=-56 ...

If `alpha+beta=-2` and `alpha^3+beta^3=-56` then the quadratic equation whose roots are `alpha, beta` is.

A

`x ^(2) + 2x - 16 =0`

B

`x ^(2) + 2x + 15 =0`

C

`x ^(2) + 2x - 12 =0`

D

`x ^(2) + 2x -8 = 0`

Text Solution

Verified by Experts

The correct Answer is:
D
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