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If the roots of the equation 1/(x+p)+1/(...

If the roots of the equation `1/(x+p)+1/(x+q)=1/r` are equal in magnitude and opposite in sign, then (A) p+q=r (B)p+q=2r C) product of roots=-`1/2(p^2+q^2)` (D) sum of roots=1

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