If α,β,γ are the roots of x3+px2+qx+r=0 , then (α- 1βγ) (β – 1γα) (γ – 1αβ) =
- (r + 1)3 / r2
(r3 - 1)/r2
(r3 + 1)/r2
None of these
αβγ= -r
(α- 1βγ) (β – 1γα) (γ – 1αβ)
=(αβγ−1)3(αβγ)2 = −(r+1)3r2