1.

If alpha, beta, gamma are roots of x^(3) + px^(2) + qx + r = 0then sum (1)/( alpha^(2) beta^(2))

Answer»

`(Q^(2) - 2pr)//R^(2)`
`q^(3) - 3PQR + 3r^(2)`
`(p^(2) - 2q)//r^(2)`
`pq//r - 3`

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