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Find the center and radius of the circle...

Find the center and radius of the circle given by the equation `2x^2+2y^2+3x+4y+9/8=0.`

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The correct Answer is:
The co-ordinates of the centre are `(-(3)/(4), -1)` and radius `= sqrt(((3)/(4))^(2) _ (1)^(2) - (9)/(16)) =1`

[Hint : Make the coefficient of `x^(2) and y^(2)` unity and then compare witht the general equation or the circle ]
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