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 α,β,γ are the root of x32x2x+2=0. Centroid of triangle with verties α,β,γ(β,γ,α),(γ,α,β) is

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a
−23,23,−23
b
−23,13,23
c
23,23,23
d
43,23,23

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detailed solution

Correct option is C

s1=α+β+γ=2s2=αβ+βγ+γα=−1α+β+γ3,α+β+γ3,α+β+γ3

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