1.

Ifalpha, beta , gammaarethe rootsof theequationx^3 +px^2 +qx +r=0thensum alpha^2 ( beta + gamma)=

Answer»

`p^2 -2Q`
`-p^3 +3PQ -3R`
`p^4 -4p^2 q+4pr +2q^2`
`3r-pq`

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