Ononot — If P(x) = x^3 - 2x^2 + 3x - 4 has roots r1, r2, r3, find \fr

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Polynomialshard

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If $P(x) = x^3 - 2x^2 + 3x - 4$ has roots $r_1, r_2, r_3$ , find $\frac{1}{r_1} + \frac{1}{r_2} + \frac{1}{r_3}$ .