The value of αβ + βγ + γα, if α, β and γ are the zeros of 2x3 – 4x2 + 9x – 7 is _______

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The value of αβ + βγ + γα, if α, β and γ are the zeros of 2x<sup>3</sup> – 4x<sup>2</sup> + 9x – 7 is _______