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Asked by Supriyo Last Modified
Answer 
x3+ px2 +qx+2
α+β+γ=-p...(1)
αβ+βγ+γα=q...(2)
αγβ=-2..(3)
αβ+1=0(given)
From eq(3)..γ=2
2p+q+5=-2(α+β+γ)+(αβ+βγ+γα)+5
=-2(α+β+2)+(-1+2β+2α)+5
=0
∴2p+q+5=0.
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