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Roots of x^(3) +ax^(2) +bx+c=0 are cosin...

Roots of `x^(3) +ax^(2) +bx+c=0` are cosines of angles of an acute triangle, then the value of `a^(2)-2b-2c` is

A

0

B

1

C

`-1`

D

3

Text Solution

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The correct Answer is:
B
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