For the equation x3+3x2−x−2=0  if s1,s2,s3 have their usual notation then

The given equation is x3+3x2−x−2=0 Here a=1,b=3,c=−1,d=−2 Let α,β,γ  are the roots of given equation⇒s1=α+β+γ=−ba=−3 ⇒s2=αβ+βγ+γα=ca=−1 ⇒s3=αβγ=−da=2 ∴ s1=−3 , s2=−1 , s3=2 ∴ s1