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If the roots of the equation x^3-12 x...

If the roots of the equation `x^3-12 x^2+39 x-28=0` are in A.P. then common difference will be `+-1` b. `+-2` c.`+-3` d. `+-4`

A

`+- 1`

B

`+- 2`

C

`+- 3`

D

`+- 4`

Text Solution

Verified by Experts

The correct Answer is:
C
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