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If α, β, γ are the roots of the equation x^3 + px^2 + qx +1 = 0. Find the value of the following in terms of coefficients. (i) ∑ 1/βr

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If α, β, γ are the roots of the equation x3 + px2 + qx +1 = 0. Find the value of the following in terms of coefficients.

(i) ∑ 1/βr 

(ii) ∑ 1/α

(iii) ∑ α2β

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According to question

= 3r - pq

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