If α,β,γ are roots of x3+x2−5x−1=0 then [α+β+γ]= (where [.] denotes G.I.F)
If α,β,γ are the roots of x3−x2−1=0, then the value of 1+α1−α+1+β1−β+1+γ1−γ=
If α, β, γ are the roots of the equation x3+4x+1=0,then (α+β)−1+(β+γ)−1+(γ+α)−1=