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Let Delta = |{:(-bc,,b^(2)+bc,,c^(2)+bc)...

Let `Delta = |{:(-bc,,b^(2)+bc,,c^(2)+bc),(a^(2)+ac,,-ac,,c^(2)+ac),(a^(2)+ab,,b^(2)+ab,,-ab):}|` and the equation
`px^(3) +qx^(2) +rx+s=0` has roots a,b,c where `a,b,c in R^(+)`
`" if " Delta =27 " and " a^(2) +b^(2)+c^(2) =3`then

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