Let f(x) =(x^(2)-3x+ 2) (x ^(2) + 3x +2)...

Let `f(x) =(x^(2)-3x+ 2) (x ^(2) + 3x +2) and alpha, beta, gamma` satisfy `alpha lt beta gamma` are the roots of `f '(x)=0` then which of the following is/are correct ([.] denots greatest integer function) ?

`[alpha]=-2`

`[beta]=-1`

`[beta]0`

`[alpha]=1`

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A, C

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