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The abscissae of two points P,Q are the ...

The abscissae of two points P,Q are the roots of the equation `2x^2+4x-7=0` and their ordinates are the roots of the equation `3x^2-12x-1=0`. Then the centre of the circle with PQ as a diameter is

A

`(-1,2)`

B

`(-2,6)`

C

`(1,-2)`

D

`(2,-6)`

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The correct Answer is:
A
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