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The vertices of a triangle are (p q ,1/(...

The vertices of a triangle are `(p q ,1/(p q)),(p q)),(q r ,1/(q r)),` and `(r q ,1/(r p)),` where `p ,q` and `r` are the roots of the equation `y^3-3y^2+6y+1=0` . The coordinates of its centroid are `(1,2)` (b) `2,-1)` `(1,-1)` (d) `2,3)`

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