Quantitative Aptitude Algebra Polynomials

If α, β, γ are the zeroes of the polynomial f(x) = ax3 + bx2 + cx + d, then \(\rm \frac{1}{\alpha}+\frac{1}{\beta}+\frac{1}{\gamma}=\)

1
\(\rm-\frac{b}{d}\)
2
\(\rm\frac{c}{d}\)
3
\(\rm-\frac{c}{d}\)
4
\(\rm-\frac{c}{a}\)
5
Not Attempted

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