If alpha, beta, gamma are the roots of x...

If `alpha, beta, gamma` are the roots of `x^3+a x^2+b=0` then the value of `[[alpha , beta , gamma],[beta , gamma , alpha],[gamma , alpha , beta]]` is

`- a^3`

`a^3-3 b `

`a^3`

`a^2-3 b`

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