The equation of the circle whose diamete...

The equation of the circle whose diameter is the common chord of the circles `x^2+y^2+3x+2y+1=0` and `x^2+y^2+3x+4y+2=0` is

`x^2+y^2+8x+10y+2=0`

`x^2+y^2-5x+4y+7=0`

`2x^2+2y^2+6x+2y+1=0`

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