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If (x1, y1)&(x2,y2) are the ends of a di...

If `(x_1, y_1)&(x_2,y_2)` are the ends of a diameter of a circle such that `x_1&x_2` are the roots of the equation `a x^2+b x+c=0` and `y_1&y_2` are the roots of the equation `p y^2=q y+c=0.` Then the coordinates of the centre of the circle is: `(b/(2a), q/(2p))` `( b/(2a), q/(2p))` `(b/a , q/p)` d. none of these

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