1.

Let p,q and r be real number (p ne q, r ne 0) such that the roots ofthe equation (1)/( x + p) + (1)/( x + q) = (1)/(r)are equal in magnitude but opposite in sign, then the sum of squares of these roots is equal to :

Answer»

`(1)/(2) (p^(2) + q^(2))`
`p^(2) + q^(2)`
`2 (p^(2) + q^(2))`
`p^(2) + q^(2) + r^(2)`

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